Number of the day: 490415

Properties of the number 490415:

490415 = 5 × 43 × 2281 is a sphenic number and squarefree.
490415 has 3 distinct prime factors, 8 divisors, 15 antidivisors and 383040 totatives.
490415 has a prime digit sum 23 in base 10.
Reversing the decimal digits of 490415 results in a sphenic number.
490415 = 245208² - 245207² = 49044² - 49039² = 5724² - 5681² = 1248² - 1033² is the difference of 2 nonnegative squares in 4 ways.
490415 is the difference of 2 positive pentagonal numbers in 4 ways.
490415 is not the sum of 3 positive squares.
490415² = 309600² + 380335² = 19479² + 490028² = 118508² + 475881² = 294249² + 392332² is the sum of 2 positive squares in 4 ways.
490415² is the sum of 3 positive squares.
490415 is a divisor of 251⁵⁷ - 1.