20744472 has 32 divisors (see below), whose sum is σ = 59270400. Its totient is φ = 5926944.

The previous prime is 20744467. The next prime is 20744497. The reversal of 20744472 is 27444702.

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, 61572 + ... + 61907.

It is an arithmetic number, because the mean of its divisors is an integer number (1852200).

Almost surely, 2^20744472 is an apocalyptic number.

It is an amenable number.

20744472 is an abundant number, since it is smaller than the sum of its proper divisors (38525928).

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

20744472 is a wasteful number, since it uses less digits than its factorization.

20744472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123495 (or 123491 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 20744472 is about 4554.6099723247. The cubic root of 20744472 is about 274.7688283154.

The spelling of 20744472 in words is "twenty million, seven hundred forty-four thousand, four hundred seventy-two".