872621572 has 24 divisors (see below), whose sum is σ = 1541514240. Its totient is φ = 432200160.

The previous prime is 872621549. The next prime is 872621591. The reversal of 872621572 is 275126278.

It is a happy number.

It is a super-2 number, since 2×872621572² = 1522936815839502368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538179 + ... + 539797.

It is an arithmetic number, because the mean of its divisors is an integer number (64229760).

Almost surely, 2^872621572 is an apocalyptic number.

It is an amenable number.

872621572 is a deficient number, since it is larger than the sum of its proper divisors (668892668).

872621572 is a wasteful number, since it uses less digits than its factorization.

872621572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811 (or 2809 counting only the distinct ones).

The product of its digits is 94080, while the sum is 40.

The square root of 872621572 is about 29540.1687876017. The cubic root of 872621572 is about 955.5981822961.

The spelling of 872621572 in words is "eight hundred seventy-two million, six hundred twenty-one thousand, five hundred seventy-two".