20908252904 has 64 divisors (see below), whose sum is σ = 49249728000. Its totient is φ = 8083857600.

The previous prime is 20908252847. The next prime is 20908252909. The reversal of 20908252904 is 40925280902.

It is not an unprimeable number, because it can be changed into a prime (20908252909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48854 + ... + 210245.

It is an arithmetic number, because the mean of its divisors is an integer number (769527000).

Almost surely, 2^20908252904 is an apocalyptic number.

It is an amenable number.

20908252904 is an abundant number, since it is smaller than the sum of its proper divisors (28341475096).

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

20908252904 is a wasteful number, since it uses less digits than its factorization.

20908252904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259254 (or 259250 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 41.

The spelling of 20908252904 in words is "twenty billion, nine hundred eight million, two hundred fifty-two thousand, nine hundred four".