872490 has 32 divisors (see below), whose sum is σ = 2119680. Its totient is φ = 229824.

The previous prime is 872479. The next prime is 872533. The reversal of 872490 is 94278.

It is a super-2 number, since 2×872490² = 1522477600200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

872490 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 15 ways as a sum of consecutive naturals, for example, 3696 + ... + 3924.

It is an arithmetic number, because the mean of its divisors is an integer number (66240).

2⁸⁷²⁴⁹⁰ is an apocalyptic number.

872490 is an abundant number, since it is smaller than the sum of its proper divisors (1247190).

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

872490 is a wasteful number, since it uses less digits than its factorization.

872490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 872490 is about 934.0717317209. The cubic root of 872490 is about 95.5550152204. Note that the first 3 decimals are identical.

The spelling of 872490 in words is "eight hundred seventy-two thousand, four hundred ninety".