870961872 has 120 divisors (see below), whose sum is σ = 2558898720. Its totient is φ = 254777600.

The previous prime is 870961849. The next prime is 870961873. The reversal of 870961872 is 278169078.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870961873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165847 + ... + 171017.

It is an arithmetic number, because the mean of its divisors is an integer number (21324156).

Almost surely, 2^870961872 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 870961872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1279449360).

870961872 is an abundant number, since it is smaller than the sum of its proper divisors (1687936848).

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

870961872 is a wasteful number, since it uses less digits than its factorization.

870961872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233 (or 5216 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 870961872 is about 29512.0631606806. The cubic root of 870961872 is about 954.9919581206.

The spelling of 870961872 in words is "eight hundred seventy million, nine hundred sixty-one thousand, eight hundred seventy-two".