20112858 has 24 divisors (see below), whose sum is σ = 43662996. Its totient is φ = 6691200.

The previous prime is 20112857. The next prime is 20112871. The reversal of 20112858 is 85821102.

It can be written as a sum of positive squares in 2 ways, for example, as 18378369 + 1734489 = 4287^2 + 1317^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20112857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14098 + ... + 15458.

Almost surely, 2^20112858 is an apocalyptic number.

20112858 is an abundant number, since it is smaller than the sum of its proper divisors (23550138).

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

20112858 is a wasteful number, since it uses less digits than its factorization.

20112858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 20112858 is about 4484.7361126381. The cubic root of 20112858 is about 271.9513771939.

The spelling of 20112858 in words is "twenty million, one hundred twelve thousand, eight hundred fifty-eight".