870972928 has 80 divisors (see below), whose sum is σ = 2016701280. Its totient is φ = 368050176.

The previous prime is 870972911. The next prime is 870972929. The reversal of 870972928 is 829279078.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870972929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259968 + ... + 263296.

It is an arithmetic number, because the mean of its divisors is an integer number (25208766).

Almost surely, 2^870972928 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 870972928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1008350640).

870972928 is an abundant number, since it is smaller than the sum of its proper divisors (1145728352).

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

870972928 is an equidigital number, since it uses as much as digits as its factorization.

870972928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3427 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 52.

The square root of 870972928 is about 29512.2504733204. The cubic root of 870972928 is about 954.9959989964.

The spelling of 870972928 in words is "eight hundred seventy million, nine hundred seventy-two thousand, nine hundred twenty-eight".