872177904 has 90 divisors (see below), whose sum is σ = 2643164160. Its totient is φ = 268354944.

The previous prime is 872177899. The next prime is 872177921. The reversal of 872177904 is 409771278.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 872177904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 6417 + ... + 42255.

Almost surely, 2^872177904 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 872177904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321582080).

872177904 is an abundant number, since it is smaller than the sum of its proper divisors (1770986256).

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

872177904 is a wasteful number, since it uses less digits than its factorization.

872177904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35879 (or 35857 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 45.

The square root of 872177904 is about 29532.6582616601. The cubic root of 872177904 is about 955.4362028764.

The spelling of 872177904 in words is "eight hundred seventy-two million, one hundred seventy-seven thousand, nine hundred four".