20013112 has 16 divisors (see below), whose sum is σ = 42885360. Its totient is φ = 8577024.

The previous prime is 20013109. The next prime is 20013121. The reversal of 20013112 is 21131002.

It is a congruent number.

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, 178633 + ... + 178744.

It is an arithmetic number, because the mean of its divisors is an integer number (2680335).

Almost surely, 2^20013112 is an apocalyptic number.

It is an amenable number.

20013112 is an abundant number, since it is smaller than the sum of its proper divisors (22872248).

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

20013112 is a wasteful number, since it uses less digits than its factorization.

20013112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357390 (or 357386 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 20013112 is about 4473.6016809725. The cubic root of 20013112 is about 271.5010677740.

Adding to 20013112 its reverse (21131002), we get a palindrome (41144114).

The spelling of 20013112 in words is "twenty million, thirteen thousand, one hundred twelve".