870432156 has 120 divisors (see below), whose sum is σ = 2494001664. Its totient is φ = 262530720.

The previous prime is 870432149. The next prime is 870432203. The reversal of 870432156 is 651234078.

870432156 is a `hidden beast` number, since 8 + 70 + 432 + 156 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 870432156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1008181 + ... + 1009043.

Almost surely, 2^870432156 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 870432156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1247000832).

870432156 is an abundant number, since it is smaller than the sum of its proper divisors (1623569508).

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

870432156 is a wasteful number, since it uses less digits than its factorization.

870432156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 870432156 is about 29503.0872282885. The cubic root of 870432156 is about 954.7983112542.

The spelling of 870432156 in words is "eight hundred seventy million, four hundred thirty-two thousand, one hundred fifty-six".