20875072 has 28 divisors (see below), whose sum is σ = 43606720. Its totient is φ = 9887616.

The previous prime is 20875069. The next prime is 20875093. The reversal of 20875072 is 27057802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7368 + ... + 9799.

Almost surely, 2^20875072 is an apocalyptic number.

It is an amenable number.

20875072 is an abundant number, since it is smaller than the sum of its proper divisors (22731648).

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

20875072 is a wasteful number, since it uses less digits than its factorization.

20875072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17198 (or 17188 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 31.

The square root of 20875072 is about 4568.9245999469. The cubic root of 20875072 is about 275.3442388821.

The spelling of 20875072 in words is "twenty million, eight hundred seventy-five thousand, seventy-two".