John Forbes Nash, Jr. was born on this day 91 years ago.
Properties of the number 286345:
286345 is a cyclic number.286345 = 5 × 57269 is semiprime and squarefree.
286345 has 2 distinct prime factors, 4 divisors, 11 antidivisors and 229072 totatives.
286345 has a triangular digit sum 28 in base 10.
Reversing the decimal digits of 286345 results in an emirpimes.
286345 = 1431732 - 1431722 = 286372 - 286322 is the difference of 2 nonnegative squares in 2 ways.
286345 is the sum of 2 positive triangular numbers.
286345 is the difference of 2 positive pentagonal numbers in 2 ways.
286345 = 2882 + 4512 = 1882 + 5012 is the sum of 2 positive squares in 2 ways.
286345 = 442 + 752 + 5282 is the sum of 3 positive squares.
2863452 = 1883762 + 2156572 = 1718072 + 2290762 = 1204572 + 2597762 = 595002 + 2800952 is the sum of 2 positive squares in 4 ways.
2863452 is the sum of 3 positive squares.
286345 is a proper divisor of 1429278 - 1.
286345 = '286' + '345' is the concatenation of 2 sphenic numbers.
286345 is an emirpimes in (at least) the following bases: 2, 10, 22, 25, 28, 29, 37, 38, 41, 43, 48, 52, 55, 57, 60, 63, 65, 67, 71, 72, 73, 77, 82, 91, 92, 93, and 99.