18700132 has 12 divisors (see below), whose sum is σ = 35700336. Its totient is φ = 8500040.

The previous prime is 18700117. The next prime is 18700163. The reversal of 18700132 is 23100781.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212458 + ... + 212545.

It is an arithmetic number, because the mean of its divisors is an integer number (2975028).

Almost surely, 2^18700132 is an apocalyptic number.

It is an amenable number.

18700132 is a deficient number, since it is larger than the sum of its proper divisors (17000204).

18700132 is a wasteful number, since it uses less digits than its factorization.

18700132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425018 (or 425016 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 18700132 is about 4324.3649244716. The cubic root of 18700132 is about 265.4289102632.

The spelling of 18700132 in words is "eighteen million, seven hundred thousand, one hundred thirty-two".