20600904 has 32 divisors (see below), whose sum is σ = 53280000. Its totient is φ = 6629952.

The previous prime is 20600903. The next prime is 20600911. The reversal of 20600904 is 40900602.

It is not an unprimeable number, because it can be changed into a prime (20600903) 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, 14104 + ... + 15495.

It is an arithmetic number, because the mean of its divisors is an integer number (1665000).

Almost surely, 2^20600904 is an apocalyptic number.

20600904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20600904 is an abundant number, since it is smaller than the sum of its proper divisors (32679096).

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

20600904 is a wasteful number, since it uses less digits than its factorization.

20600904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29637 (or 29633 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 20600904 is about 4538.8218735703. The cubic root of 20600904 is about 274.1334885105.

The spelling of 20600904 in words is "twenty million, six hundred thousand, nine hundred four".