20204916 has 24 divisors (see below), whose sum is σ = 47508384. Its totient is φ = 6683040.

The previous prime is 20204903. The next prime is 20204927. The reversal of 20204916 is 61940202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4855 + ... + 7998.

It is an arithmetic number, because the mean of its divisors is an integer number (1979516).

Almost surely, 2^20204916 is an apocalyptic number.

It is an amenable number.

20204916 is an abundant number, since it is smaller than the sum of its proper divisors (27303468).

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

20204916 is a wasteful number, since it uses less digits than its factorization.

20204916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12991 (or 12989 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 20204916 is about 4494.9878754008. The cubic root of 20204916 is about 272.3656594504.

The spelling of 20204916 in words is "twenty million, two hundred four thousand, nine hundred sixteen".