18307708 has 12 divisors (see below), whose sum is σ = 33923232. Its totient is φ = 8615360.

The previous prime is 18307699. The next prime is 18307733. The reversal of 18307708 is 80770381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 134548 + ... + 134683.

It is an arithmetic number, because the mean of its divisors is an integer number (2826936).

Almost surely, 2^18307708 is an apocalyptic number.

It is an amenable number.

18307708 is a deficient number, since it is larger than the sum of its proper divisors (15615524).

18307708 is a wasteful number, since it uses less digits than its factorization.

18307708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269252 (or 269250 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 18307708 is about 4278.7507522640. The cubic root of 18307708 is about 263.5590857277.

The spelling of 18307708 in words is "eighteen million, three hundred seven thousand, seven hundred eight".