869890032 has 180 divisors, whose sum is σ = 2754750024. Its totient is φ = 254123520.

The previous prime is 869890013. The next prime is 869890033. The reversal of 869890032 is 230098968.

It is a super-2 number, since 2×869890032² = 1513417335545922048, 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 869890032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869890033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1331818 + ... + 1332470.

Almost surely, 2^869890032 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 869890032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1377375012).

869890032 is an abundant number, since it is smaller than the sum of its proper divisors (1884859992).

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

869890032 is a wasteful number, since it uses less digits than its factorization.

869890032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 869890032 is about 29493.8982164108. The cubic root of 869890032 is about 954.6000470644.

The spelling of 869890032 in words is "eight hundred sixty-nine million, eight hundred ninety thousand, thirty-two".