872836 has 12 divisors (see below), whose sum is σ = 1576960. Its totient is φ = 422280.

The previous prime is 872791. The next prime is 872843. The reversal of 872836 is 638278.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

872836 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 3 ways as a sum of consecutive naturals, for example, 3396 + ... + 3643.

2⁸⁷²⁸³⁶ is an apocalyptic number.

It is an amenable number.

872836 is a deficient number, since it is larger than the sum of its proper divisors (704124).

872836 is a wasteful number, since it uses less digits than its factorization.

872836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7074 (or 7072 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 872836 is about 934.2569239776. The cubic root of 872836 is about 95.5676448459.

The spelling of 872836 in words is "eight hundred seventy-two thousand, eight hundred thirty-six".