18056712 has 32 divisors (see below), whose sum is σ = 45298080. Its totient is φ = 5998080.

The previous prime is 18056699. The next prime is 18056713. The reversal of 18056712 is 21765081.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18056712.

It is not an unprimeable number, because it can be changed into a prime (18056713) 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, 6808 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (1415565).

Almost surely, 2^18056712 is an apocalyptic number.

18056712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18056712 is an abundant number, since it is smaller than the sum of its proper divisors (27241368).

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

18056712 is a wasteful number, since it uses less digits than its factorization.

18056712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2613 (or 2609 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 18056712 is about 4249.3190042641. The cubic root of 18056712 is about 262.3490869518.

The spelling of 18056712 in words is "eighteen million, fifty-six thousand, seven hundred twelve".