20015112 has 32 divisors (see below), whose sum is σ = 53887680. Its totient is φ = 6158400.

The previous prime is 20015087. The next prime is 20015131. The reversal of 20015112 is 21151002.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 31764 + ... + 32387.

It is an arithmetic number, because the mean of its divisors is an integer number (1683990).

Almost surely, 2^20015112 is an apocalyptic number.

It is an amenable number.

20015112 is an abundant number, since it is smaller than the sum of its proper divisors (33872568).

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

20015112 is a wasteful number, since it uses less digits than its factorization.

20015112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64173 (or 64169 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 20015112 is about 4473.8252089236. The cubic root of 20015112 is about 271.5101115790.

Adding to 20015112 its reverse (21151002), we get a palindrome (41166114).

The spelling of 20015112 in words is "twenty million, fifteen thousand, one hundred twelve".