18432768 has 36 divisors (see below), whose sum is σ = 49060088. Its totient is φ = 6144000.

The previous prime is 18432763. The next prime is 18432781. The reversal of 18432768 is 86723481.

It is a super-2 number, since 2×18432768² = 679533872283648, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18432763) by changing a digit.

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, 11233 + ... + 12768.

Almost surely, 2^18432768 is an apocalyptic number.

It is an amenable number.

18432768 is an abundant number, since it is smaller than the sum of its proper divisors (30627320).

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

18432768 is an equidigital number, since it uses as much as digits as its factorization.

18432768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24020 (or 24006 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The square root of 18432768 is about 4293.3399585870. The cubic root of 18432768 is about 264.1578486687.

The spelling of 18432768 in words is "eighteen million, four hundred thirty-two thousand, seven hundred sixty-eight".