18464232 has 32 divisors (see below), whose sum is σ = 47145600. Its totient is φ = 6023424.

The previous prime is 18464231. The next prime is 18464249. The reversal of 18464232 is 23246481.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18464232.

It is not an unprimeable number, because it can be changed into a prime (18464231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7057 + ... + 9312.

It is an arithmetic number, because the mean of its divisors is an integer number (1473300).

Almost surely, 2^18464232 is an apocalyptic number.

18464232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18464232 is an abundant number, since it is smaller than the sum of its proper divisors (28681368).

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

18464232 is a wasteful number, since it uses less digits than its factorization.

18464232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16425 (or 16421 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 18464232 is about 4297.0026762849. The cubic root of 18464232 is about 264.3080655346.

The spelling of 18464232 in words is "eighteen million, four hundred sixty-four thousand, two hundred thirty-two".