20774572 has 24 divisors (see below), whose sum is σ = 44746016. Its totient is φ = 8218368.

The previous prime is 20774563. The next prime is 20774573. The reversal of 20774572 is 27547702.

It is not an unprimeable number, because it can be changed into a prime (20774573) 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, 28173 + ... + 28900.

Almost surely, 2^20774572 is an apocalyptic number.

It is an amenable number.

20774572 is an abundant number, since it is smaller than the sum of its proper divisors (23971444).

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

20774572 is a wasteful number, since it uses less digits than its factorization.

20774572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57097 (or 57095 counting only the distinct ones).

The product of its (nonzero) digits is 27440, while the sum is 34.

The square root of 20774572 is about 4557.9131189614. The cubic root of 20774572 is about 274.9016596034.

The spelling of 20774572 in words is "twenty million, seven hundred seventy-four thousand, five hundred seventy-two".