Number of the day: 7222018

Happy Casual π Day!

Properties of the number 7222018:

7222018 = 2 × 727 × 4967 is a sphenic number and squarefree.
7222018 has 3 distinct prime factors, 8 divisors, 27 antidivisors and 3605316 totatives.
7222018 has a semiprime digit sum 22 in base 10.
Reversing the decimal digits of 7222018 results in a sphenic number.
7222018 is the difference of 2 positive pentagonal numbers in 3 ways.
7222018 = 57² + 412² + 2655² is the sum of 3 positive squares.
7222018² is the sum of 3 positive squares.
7222018 is a proper divisor of 1453⁴⁹⁶⁶ - 1.