18611712 has 120 divisors (see below), whose sum is σ = 61494576. Its totient is φ = 5308416.

The previous prime is 18611711. The next prime is 18611717. The reversal of 18611712 is 21711681.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18611711) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31968 + ... + 32544.

Almost surely, 2^18611712 is an apocalyptic number.

18611712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18611712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30747288).

18611712 is an abundant number, since it is smaller than the sum of its proper divisors (42882864).

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

18611712 is an equidigital number, since it uses as much as digits as its factorization.

18611712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608 (or 589 counting only the distinct ones).

The product of its digits is 672, while the sum is 27.

The square root of 18611712 is about 4314.1293443753. The cubic root of 18611712 is about 265.0099058834.

The spelling of 18611712 in words is "eighteen million, six hundred eleven thousand, seven hundred twelve".