872399578 has 16 divisors (see below), whose sum is σ = 1328206464. Its totient is φ = 429675120.

The previous prime is 872399543. The next prime is 872399617. The reversal of 872399578 is 875993278.

It is a super-2 number, since 2×872399578² = 1522162047389156168, 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, 224851 + ... + 228697.

It is an arithmetic number, because the mean of its divisors is an integer number (83012904).

Almost surely, 2^872399578 is an apocalyptic number.

872399578 is a deficient number, since it is larger than the sum of its proper divisors (455806886).

872399578 is a wasteful number, since it uses less digits than its factorization.

872399578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5517.

The product of its digits is 7620480, while the sum is 58.

The square root of 872399578 is about 29536.4110548320. The cubic root of 872399578 is about 955.5171410363.

The spelling of 872399578 in words is "eight hundred seventy-two million, three hundred ninety-nine thousand, five hundred seventy-eight".