900804 has 24 divisors (see below), whose sum is σ = 2117248. Its totient is φ = 298080.

The previous prime is 900803. The next prime is 900817. The reversal of 900804 is 408009.

It is a super-2 number, since 2×900804² = 1622895692832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (900803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3114 + ... + 3390.

2⁹⁰⁰⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

900804 is an abundant number, since it is smaller than the sum of its proper divisors (1216444).

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

900804 is a wasteful number, since it uses less digits than its factorization.

900804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 900804 is about 949.1069486628. The cubic root of 900804 is about 96.5776800320.

The spelling of 900804 in words is "nine hundred thousand, eight hundred four".