18680298 has 32 divisors (see below), whose sum is σ = 45983616. Its totient is φ = 4926528.

The previous prime is 18680273. The next prime is 18680317. The reversal of 18680298 is 89208681.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16561 + ... + 17652.

It is an arithmetic number, because the mean of its divisors is an integer number (1436988).

Almost surely, 2^18680298 is an apocalyptic number.

18680298 is an abundant number, since it is smaller than the sum of its proper divisors (27303318).

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

18680298 is a wasteful number, since it uses less digits than its factorization.

18680298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34238.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 18680298 is about 4322.0710313460. The cubic root of 18680298 is about 265.3350360712.

The spelling of 18680298 in words is "eighteen million, six hundred eighty thousand, two hundred ninety-eight".