18464768 has 90 divisors (see below), whose sum is σ = 44825256. Its totient is φ = 7569408.

The previous prime is 18464767. The next prime is 18464773. The reversal of 18464768 is 86746481.

Its product of digits (258048) is a multiple of the sum of its prime divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18464767) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 802805 + ... + 802827.

Almost surely, 2^18464768 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 18464768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22412628).

18464768 is an abundant number, since it is smaller than the sum of its proper divisors (26360488).

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

18464768 is an frugal number, since it uses more digits than its factorization.

18464768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65 (or 32 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 18464768 is about 4297.0650448882. The cubic root of 18464768 is about 264.3106230514.

The spelling of 18464768 in words is "eighteen million, four hundred sixty-four thousand, seven hundred sixty-eight".