18677648 has 20 divisors (see below), whose sum is σ = 39478128. Its totient is φ = 8489760.

The previous prime is 18677639. The next prime is 18677669. The reversal of 18677648 is 84677681.

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, 52886 + ... + 53237.

Almost surely, 2^18677648 is an apocalyptic number.

It is an amenable number.

18677648 is an abundant number, since it is smaller than the sum of its proper divisors (20800480).

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

18677648 is a wasteful number, since it uses less digits than its factorization.

18677648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106142 (or 106136 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 18677648 is about 4321.7644544792. The cubic root of 18677648 is about 265.3224886073.

The spelling of 18677648 in words is "eighteen million, six hundred seventy-seven thousand, six hundred forty-eight".