18464736 has 24 divisors (see below), whose sum is σ = 48470184. Its totient is φ = 6154880.

The previous prime is 18464717. The next prime is 18464767. The reversal of 18464736 is 63746481.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 18464694 and 18464703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96075 + ... + 96266.

It is an arithmetic number, because the mean of its divisors is an integer number (2019591).

Almost surely, 2^18464736 is an apocalyptic number.

18464736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18464736 is an abundant number, since it is smaller than the sum of its proper divisors (30005448).

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

18464736 is a wasteful number, since it uses less digits than its factorization.

18464736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192354 (or 192346 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 18464736 is about 4297.0613214149. The cubic root of 18464736 is about 264.3104703653.

The spelling of 18464736 in words is "eighteen million, four hundred sixty-four thousand, seven hundred thirty-six".