18287152 has 30 divisors (see below), whose sum is σ = 38372172. Its totient is φ = 8438976.

The previous prime is 18287149. The next prime is 18287153. The reversal of 18287152 is 25178281.

It is a super-2 number, since 2×18287152² = 668839856542208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18287153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678 + ... + 6085.

Almost surely, 2^18287152 is an apocalyptic number.

It is an amenable number.

18287152 is an abundant number, since it is smaller than the sum of its proper divisors (20085020).

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

18287152 is a wasteful number, since it uses less digits than its factorization.

18287152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797 (or 6778 counting only the distinct ones).

The product of its digits is 8960, while the sum is 34.

The square root of 18287152 is about 4276.3479746157. The cubic root of 18287152 is about 263.4604068996.

The spelling of 18287152 in words is "eighteen million, two hundred eighty-seven thousand, one hundred fifty-two".