18012708 has 36 divisors (see below), whose sum is σ = 52037440. Its totient is φ = 5146416.

The previous prime is 18012697. The next prime is 18012719. The reversal of 18012708 is 80721081.

It is an interprime number because it is at equal distance from previous prime (18012697) and next prime (18012719).

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35488 + ... + 35991.

Almost surely, 2^18012708 is an apocalyptic number.

18012708 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18012708 is an abundant number, since it is smaller than the sum of its proper divisors (34024732).

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

18012708 is a wasteful number, since it uses less digits than its factorization.

18012708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71496 (or 71491 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 18012708 is about 4244.1380750395. The cubic root of 18012708 is about 262.1357996933.

Adding to 18012708 its reverse (80721081), we get a palindrome (98733789).

The spelling of 18012708 in words is "eighteen million, twelve thousand, seven hundred eight".