869820112 has 80 divisors (see below), whose sum is σ = 1966159872. Its totient is φ = 365091840.

The previous prime is 869820073. The next prime is 869820137. The reversal of 869820112 is 211028968.

869820112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1561338 + ... + 1561894.

Almost surely, 2^869820112 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 869820112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983079936).

869820112 is an abundant number, since it is smaller than the sum of its proper divisors (1096339760).

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

869820112 is a wasteful number, since it uses less digits than its factorization.

869820112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 869820112 is about 29492.7128626717. The cubic root of 869820112 is about 954.5744701060.

The spelling of 869820112 in words is "eight hundred sixty-nine million, eight hundred twenty thousand, one hundred twelve".