18713136 has 40 divisors (see below), whose sum is σ = 52062640. Its totient is φ = 5757696.

The previous prime is 18713131. The next prime is 18713137. The reversal of 18713136 is 63131781.

It is not an unprimeable number, because it can be changed into a prime (18713131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14371 + ... + 15618.

It is an arithmetic number, because the mean of its divisors is an integer number (1301566).

Almost surely, 2^18713136 is an apocalyptic number.

18713136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18713136 is an abundant number, since it is smaller than the sum of its proper divisors (33349504).

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

18713136 is a wasteful number, since it uses less digits than its factorization.

18713136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30013 (or 30007 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 18713136 is about 4325.8682365509. The cubic root of 18713136 is about 265.4904220888.

The spelling of 18713136 in words is "eighteen million, seven hundred thirteen thousand, one hundred thirty-six".