18839712 has 24 divisors (see below), whose sum is σ = 49454496. Its totient is φ = 6279872.

The previous prime is 18839707. The next prime is 18839713. The reversal of 18839712 is 21793881.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (18839713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98028 + ... + 98219.

It is an arithmetic number, because the mean of its divisors is an integer number (2060604).

Almost surely, 2^18839712 is an apocalyptic number.

18839712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18839712 is an abundant number, since it is smaller than the sum of its proper divisors (30614784).

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

18839712 is a wasteful number, since it uses less digits than its factorization.

18839712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196260 (or 196252 counting only the distinct ones).

The product of its digits is 24192, while the sum is 39.

The square root of 18839712 is about 4340.4737068666. The cubic root of 18839712 is about 266.0876715551.

The spelling of 18839712 in words is "eighteen million, eight hundred thirty-nine thousand, seven hundred twelve".