18087152 has 10 divisors (see below), whose sum is σ = 35043888. Its totient is φ = 9043568.

The previous prime is 18087103. The next prime is 18087169. The reversal of 18087152 is 25178081.

It is a happy number.

It is a super-2 number, since 2×18087152² = 654290134942208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 565208 + ... + 565239.

Almost surely, 2^18087152 is an apocalyptic number.

It is an amenable number.

18087152 is a deficient number, since it is larger than the sum of its proper divisors (16956736).

18087152 is a wasteful number, since it uses less digits than its factorization.

18087152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130455 (or 1130449 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 18087152 is about 4252.8992463965. The cubic root of 18087152 is about 262.4964268599.

The spelling of 18087152 in words is "eighteen million, eighty-seven thousand, one hundred fifty-two".