18750056 has 16 divisors (see below), whose sum is σ = 37860900. Its totient is φ = 8653824.

The previous prime is 18750047. The next prime is 18750089. The reversal of 18750056 is 65005781.

It can be written as a sum of positive squares in 2 ways, for example, as 18748900 + 1156 = 4330^2 + 34^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90041 + ... + 90248.

Almost surely, 2^18750056 is an apocalyptic number.

It is an amenable number.

18750056 is an abundant number, since it is smaller than the sum of its proper divisors (19110844).

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

18750056 is a wasteful number, since it uses less digits than its factorization.

18750056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180308 (or 180304 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 18750056 is about 4330.1334852404. The cubic root of 18750056 is about 265.6649067793.

The spelling of 18750056 in words is "eighteen million, seven hundred fifty thousand, fifty-six".