18938248 has 16 divisors (see below), whose sum is σ = 40582080. Its totient is φ = 8116368.

The previous prime is 18938239. The next prime is 18938273. The reversal of 18938248 is 84283981.

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, 169036 + ... + 169147.

It is an arithmetic number, because the mean of its divisors is an integer number (2536380).

Almost surely, 2^18938248 is an apocalyptic number.

It is an amenable number.

18938248 is an abundant number, since it is smaller than the sum of its proper divisors (21643832).

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

18938248 is a wasteful number, since it uses less digits than its factorization.

18938248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338196 (or 338192 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 18938248 is about 4351.8097384881. The cubic root of 18938248 is about 266.5507649105.

The spelling of 18938248 in words is "eighteen million, nine hundred thirty-eight thousand, two hundred forty-eight".