872587404 has 120 divisors (see below), whose sum is σ = 2470258560. Its totient is φ = 266996736.

The previous prime is 872587399. The next prime is 872587421. The reversal of 872587404 is 404785278.

It is a super-2 number, since 2×872587404² = 1522817555238918432, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 872587404.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 938812 + ... + 939740.

It is an arithmetic number, because the mean of its divisors is an integer number (20585488).

Almost surely, 2^872587404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872587404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235129280).

872587404 is an abundant number, since it is smaller than the sum of its proper divisors (1597671156).

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

872587404 is a wasteful number, since it uses less digits than its factorization.

872587404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1170 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The square root of 872587404 is about 29539.5904507832. The cubic root of 872587404 is about 955.5857098010.

The spelling of 872587404 in words is "eight hundred seventy-two million, five hundred eighty-seven thousand, four hundred four".