18474056 has 8 divisors (see below), whose sum is σ = 34638870. Its totient is φ = 9237024.

The previous prime is 18474017. The next prime is 18474059. The reversal of 18474056 is 65047481.

It can be written as a sum of positive squares in only one way, i.e., 17724100 + 749956 = 4210^2 + 866^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×18474056² = 682581490182272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18474059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154621 + ... + 1154636.

Almost surely, 2^18474056 is an apocalyptic number.

It is an amenable number.

18474056 is a deficient number, since it is larger than the sum of its proper divisors (16164814).

18474056 is a wasteful number, since it uses less digits than its factorization.

18474056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309263 (or 2309259 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 18474056 is about 4298.1456466714. The cubic root of 18474056 is about 264.3549327618.

The spelling of 18474056 in words is "eighteen million, four hundred seventy-four thousand, fifty-six".