870432 has 24 divisors (see below), whose sum is σ = 2285136. Its totient is φ = 290112.

The previous prime is 870431. The next prime is 870433. The reversal of 870432 is 234078.

It is an interprime number because it is at equal distance from previous prime (870431) and next prime (870433).

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (870431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4438 + ... + 4629.

It is an arithmetic number, because the mean of its divisors is an integer number (95214).

2⁸⁷⁰⁴³² is an apocalyptic number.

It is an amenable number.

870432 is an abundant number, since it is smaller than the sum of its proper divisors (1414704).

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

870432 is a wasteful number, since it uses less digits than its factorization.

870432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080 (or 9072 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 870432 is about 932.9694528761. The cubic root of 870432 is about 95.4798254214.

The spelling of 870432 in words is "eight hundred seventy thousand, four hundred thirty-two".