20955912 has 32 divisors (see below), whose sum is σ = 53808000. Its totient is φ = 6796224.

The previous prime is 20955911. The next prime is 20955929. The reversal of 20955912 is 21955902.

It is not an unprimeable number, because it can be changed into a prime (20955911) 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, 10912 + ... + 12687.

It is an arithmetic number, because the mean of its divisors is an integer number (1681500).

Almost surely, 2^20955912 is an apocalyptic number.

It is an amenable number.

20955912 is an abundant number, since it is smaller than the sum of its proper divisors (32852088).

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

20955912 is a wasteful number, since it uses less digits than its factorization.

20955912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23645 (or 23641 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 20955912 is about 4577.7627723594. The cubic root of 20955912 is about 275.6992102252.

The spelling of 20955912 in words is "twenty million, nine hundred fifty-five thousand, nine hundred twelve".