872542868 has 12 divisors (see below), whose sum is σ = 1527202740. Its totient is φ = 436199232.

The previous prime is 872542859. The next prime is 872542897. The reversal of 872542868 is 868245278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 423865744 + 448677124 = 20588^2 + 21182^2 .

It is a super-2 number, since 2×872542868² = 1522662112995330848, which contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16478 + ... + 44906.

It is an arithmetic number, because the mean of its divisors is an integer number (127266895).

Almost surely, 2^872542868 is an apocalyptic number.

It is an amenable number.

872542868 is a deficient number, since it is larger than the sum of its proper divisors (654659872).

872542868 is a wasteful number, since it uses less digits than its factorization.

872542868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36106 (or 36104 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 50.

The square root of 872542868 is about 29538.8366053912. The cubic root of 872542868 is about 955.5694521405.

The spelling of 872542868 in words is "eight hundred seventy-two million, five hundred forty-two thousand, eight hundred sixty-eight".