90638004 has 24 divisors (see below), whose sum is σ = 212496928. Its totient is φ = 30068640.

The previous prime is 90637997. The next prime is 90638027. The reversal of 90638004 is 40083609.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15367 + ... + 20430.

Almost surely, 2^90638004 is an apocalyptic number.

It is an amenable number.

90638004 is an abundant number, since it is smaller than the sum of its proper divisors (121858924).

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

90638004 is a wasteful number, since it uses less digits than its factorization.

90638004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36015 (or 36013 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 90638004 is about 9520.3993613713. The cubic root of 90638004 is about 449.1969281812.

The spelling of 90638004 in words is "ninety million, six hundred thirty-eight thousand, four".