18364672 has 36 divisors (see below), whose sum is σ = 38263680. Its totient is φ = 8780288.

The previous prime is 18364667. The next prime is 18364681. The reversal of 18364672 is 27646381.

It is a super-2 number, since 2×18364672² = 674522355335168, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4329 + ... + 7447.

It is an arithmetic number, because the mean of its divisors is an integer number (1062880).

Almost surely, 2^18364672 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18364672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19131840).

18364672 is an abundant number, since it is smaller than the sum of its proper divisors (19899008).

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

18364672 is an equidigital number, since it uses as much as digits as its factorization.

18364672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158 (or 3144 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 18364672 is about 4285.4021981606. The cubic root of 18364672 is about 263.8321553252.

The spelling of 18364672 in words is "eighteen million, three hundred sixty-four thousand, six hundred seventy-two".