872136 has 24 divisors (see below), whose sum is σ = 2362230. Its totient is φ = 290688.

The previous prime is 872129. The next prime is 872141. The reversal of 872136 is 631278.

872136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 799236 + 72900 = 894^2 + 270^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872136.

It is an unprimeable number.

872136 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5985 + ... + 6128.

2⁸⁷²¹³⁶ is an apocalyptic number.

It is an amenable number.

872136 is an abundant number, since it is smaller than the sum of its proper divisors (1490094).

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

872136 is a wasteful number, since it uses less digits than its factorization.

872136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125 (or 12118 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 872136 is about 933.8822195545. The cubic root of 872136 is about 95.5420901243.

The spelling of 872136 in words is "eight hundred seventy-two thousand, one hundred thirty-six".