18898056 has 32 divisors (see below), whose sum is σ = 52495200. Its totient is φ = 6299280.

The previous prime is 18898049. The next prime is 18898069. The reversal of 18898056 is 65089881.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43530 + ... + 43961.

It is an arithmetic number, because the mean of its divisors is an integer number (1640475).

Almost surely, 2^18898056 is an apocalyptic number.

It is an amenable number.

18898056 is an abundant number, since it is smaller than the sum of its proper divisors (33597144).

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

18898056 is a wasteful number, since it uses less digits than its factorization.

18898056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87506 (or 87496 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 18898056 is about 4347.1894368661. The cubic root of 18898056 is about 266.3620674828.

The spelling of 18898056 in words is "eighteen million, eight hundred ninety-eight thousand, fifty-six".