20504604 has 12 divisors (see below), whose sum is σ = 47844104. Its totient is φ = 6834864.

The previous prime is 20504597. The next prime is 20504611. The reversal of 20504604 is 40640502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20504597) and next prime (20504611).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854347 + ... + 854370.

Almost surely, 2^20504604 is an apocalyptic number.

It is an amenable number.

20504604 is an abundant number, since it is smaller than the sum of its proper divisors (27339500).

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

20504604 is a wasteful number, since it uses less digits than its factorization.

20504604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708724 (or 1708722 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20504604 is about 4528.2009672717. The cubic root of 20504604 is about 273.7056707687.

The spelling of 20504604 in words is "twenty million, five hundred four thousand, six hundred four".