20544872 has 16 divisors (see below), whose sum is σ = 38577600. Its totient is φ = 10257520.

The previous prime is 20544851. The next prime is 20544889. The reversal of 20544872 is 27844502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5879 + ... + 8697.

It is an arithmetic number, because the mean of its divisors is an integer number (2411100).

Almost surely, 2^20544872 is an apocalyptic number.

It is an amenable number.

20544872 is a deficient number, since it is larger than the sum of its proper divisors (18032728).

20544872 is a wasteful number, since it uses less digits than its factorization.

20544872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736 (or 3732 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 20544872 is about 4532.6451438426. The cubic root of 20544872 is about 273.8847260497.

The spelling of 20544872 in words is "twenty million, five hundred forty-four thousand, eight hundred seventy-two".