872540 has 12 divisors (see below), whose sum is σ = 1832376. Its totient is φ = 349008.

The previous prime is 872533. The next prime is 872549. The reversal of 872540 is 45278.

It is a super-2 number, since 2×872540² = 1522652103200, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872540.

It is not an unprimeable number, because it can be changed into a prime (872549) 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, 21794 + ... + 21833.

It is an arithmetic number, because the mean of its divisors is an integer number (152698).

2⁸⁷²⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

872540 is an abundant number, since it is smaller than the sum of its proper divisors (959836).

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

872540 is a wasteful number, since it uses less digits than its factorization.

872540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43636 (or 43634 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 872540 is about 934.0984958772. The cubic root of 872540 is about 95.5568405171.

The spelling of 872540 in words is "eight hundred seventy-two thousand, five hundred forty".