20624772 has 24 divisors (see below), whose sum is σ = 54999616. Its totient is φ = 5892768.

The previous prime is 20624761. The next prime is 20624777. The reversal of 20624772 is 27742602.

It is not an unprimeable number, because it can be changed into a prime (20624777) 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, 122683 + ... + 122850.

Almost surely, 2^20624772 is an apocalyptic number.

It is an amenable number.

20624772 is an abundant number, since it is smaller than the sum of its proper divisors (34374844).

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

20624772 is a wasteful number, since it uses less digits than its factorization.

20624772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245547 (or 245545 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 20624772 is about 4541.4504291030. The cubic root of 20624772 is about 274.2393170839.

The spelling of 20624772 in words is "twenty million, six hundred twenty-four thousand, seven hundred seventy-two".