18288056 has 16 divisors (see below), whose sum is σ = 36307440. Its totient is φ = 8606080.

The previous prime is 18288043. The next prime is 18288071. The reversal of 18288056 is 65088281.

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, 67100 + ... + 67371.

It is an arithmetic number, because the mean of its divisors is an integer number (2269215).

Almost surely, 2^18288056 is an apocalyptic number.

It is an amenable number.

18288056 is a deficient number, since it is larger than the sum of its proper divisors (18019384).

18288056 is a wasteful number, since it uses less digits than its factorization.

18288056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134494 (or 134490 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 18288056 is about 4276.4536709755. The cubic root of 18288056 is about 263.4647480947.

The spelling of 18288056 in words is "eighteen million, two hundred eighty-eight thousand, fifty-six".