18007332 has 24 divisors (see below), whose sum is σ = 48019776. Its totient is φ = 5144928.

The previous prime is 18007303. The next prime is 18007343. The reversal of 18007332 is 23370081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107103 + ... + 107270.

It is an arithmetic number, because the mean of its divisors is an integer number (2000824).

Almost surely, 2^18007332 is an apocalyptic number.

18007332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18007332 is an abundant number, since it is smaller than the sum of its proper divisors (30012444).

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

18007332 is a wasteful number, since it uses less digits than its factorization.

18007332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214387 (or 214385 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 18007332 is about 4243.5046836312. The cubic root of 18007332 is about 262.1097184348.

The spelling of 18007332 in words is "eighteen million, seven thousand, three hundred thirty-two".