18083712 has 32 divisors (see below), whose sum is σ = 48035880. Its totient is φ = 6027776.

The previous prime is 18083707. The next prime is 18083719. The reversal of 18083712 is 21738081.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 18083712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18083719) 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, 23163 + ... + 23930.

Almost surely, 2^18083712 is an apocalyptic number.

18083712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18083712 is an abundant number, since it is smaller than the sum of its proper divisors (29952168).

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

18083712 is an equidigital number, since it uses as much as digits as its factorization.

18083712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47110 (or 47098 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 18083712 is about 4252.4947971749. The cubic root of 18083712 is about 262.4797843842.

The spelling of 18083712 in words is "eighteen million, eighty-three thousand, seven hundred twelve".