18928648 has 32 divisors (see below), whose sum is σ = 37195200. Its totient is φ = 9018688.

The previous prime is 18928627. The next prime is 18928649. The reversal of 18928648 is 84682981.

It is a junction number, because it is equal to n+sod(n) for n = 18928598 and 18928607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18928649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18765 + ... + 19747.

It is an arithmetic number, because the mean of its divisors is an integer number (1162350).

Almost surely, 2^18928648 is an apocalyptic number.

It is an amenable number.

18928648 is a deficient number, since it is larger than the sum of its proper divisors (18266552).

18928648 is a wasteful number, since it uses less digits than its factorization.

18928648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1101 (or 1097 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 18928648 is about 4350.7066092762. The cubic root of 18928648 is about 266.5057181557.

The spelling of 18928648 in words is "eighteen million, nine hundred twenty-eight thousand, six hundred forty-eight".