18413232 has 20 divisors (see below), whose sum is σ = 47567640. Its totient is φ = 6137728.

The previous prime is 18413221. The next prime is 18413249. The reversal of 18413232 is 23231481.

It is a super-2 number, since 2×18413232² = 678094225371648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

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

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, 191757 + ... + 191852.

It is an arithmetic number, because the mean of its divisors is an integer number (2378382).

Almost surely, 2^18413232 is an apocalyptic number.

18413232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18413232 is an abundant number, since it is smaller than the sum of its proper divisors (29154408).

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

18413232 is a wasteful number, since it uses less digits than its factorization.

18413232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383620 (or 383614 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 18413232 is about 4291.0642036679. The cubic root of 18413232 is about 264.0644929672.

The spelling of 18413232 in words is "eighteen million, four hundred thirteen thousand, two hundred thirty-two".