872658402 has 128 divisors (see below), whose sum is σ = 2229534720. Its totient is φ = 221175360.

The previous prime is 872658361. The next prime is 872658421. The reversal of 872658402 is 204856278.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6278049 + ... + 6278187.

It is an arithmetic number, because the mean of its divisors is an integer number (17418240).

Almost surely, 2^872658402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 872658402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1114767360).

872658402 is an abundant number, since it is smaller than the sum of its proper divisors (1356876318).

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

872658402 is a wasteful number, since it uses less digits than its factorization.

872658402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396.

The product of its (nonzero) digits is 215040, while the sum is 42.

The square root of 872658402 is about 29540.7921694730. The cubic root of 872658402 is about 955.6116261481.

The spelling of 872658402 in words is "eight hundred seventy-two million, six hundred fifty-eight thousand, four hundred two".