872872728 has 64 divisors (see below), whose sum is σ = 2685768960. Its totient is φ = 230207616.

The previous prime is 872872709. The next prime is 872872771. The reversal of 872872728 is 827278278.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197650 + ... + 202017.

It is an arithmetic number, because the mean of its divisors is an integer number (41965140).

Almost surely, 2^872872728 is an apocalyptic number.

It is an amenable number.

872872728 is an abundant number, since it is smaller than the sum of its proper divisors (1812896232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

872872728 is a wasteful number, since it uses less digits than its factorization.

872872728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399696 (or 399692 counting only the distinct ones).

The product of its digits is 1404928, while the sum is 51.

The square root of 872872728 is about 29544.4195745999. The cubic root of 872872728 is about 955.6898528830.

The spelling of 872872728 in words is "eight hundred seventy-two million, eight hundred seventy-two thousand, seven hundred twenty-eight".