18891248 has 20 divisors (see below), whose sum is σ = 36885288. Its totient is φ = 9372480.

The previous prime is 18891193. The next prime is 18891251. The reversal of 18891248 is 84219881.

It is a congruent number.

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, 2411 + ... + 6602.

Almost surely, 2^18891248 is an apocalyptic number.

It is an amenable number.

18891248 is a deficient number, since it is larger than the sum of its proper divisors (17994040).

18891248 is a wasteful number, since it uses less digits than its factorization.

18891248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152 (or 9146 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 18891248 is about 4346.4063316722. The cubic root of 18891248 is about 266.3300781121.

The spelling of 18891248 in words is "eighteen million, eight hundred ninety-one thousand, two hundred forty-eight".