20504632 has 8 divisors (see below), whose sum is σ = 38446200. Its totient is φ = 10252312.

The previous prime is 20504611. The next prime is 20504639. The reversal of 20504632 is 23640502.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20504639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1281532 + ... + 1281547.

It is an arithmetic number, because the mean of its divisors is an integer number (4805775).

Almost surely, 2^20504632 is an apocalyptic number.

It is an amenable number.

20504632 is a deficient number, since it is larger than the sum of its proper divisors (17941568).

20504632 is a wasteful number, since it uses less digits than its factorization.

20504632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563085 (or 2563081 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20504632 is about 4528.2040590062. The cubic root of 20504632 is about 273.7057953546.

The spelling of 20504632 in words is "twenty million, five hundred four thousand, six hundred thirty-two".