18128976 has 20 divisors (see below), whose sum is σ = 46833312. Its totient is φ = 6042976.

The previous prime is 18128963. The next prime is 18128993. The reversal of 18128976 is 67982181.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 188796 + ... + 188891.

Almost surely, 2^18128976 is an apocalyptic number.

18128976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18128976 is an abundant number, since it is smaller than the sum of its proper divisors (28704336).

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

18128976 is a wasteful number, since it uses less digits than its factorization.

18128976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377698 (or 377692 counting only the distinct ones).

The product of its digits is 48384, while the sum is 42.

The square root of 18128976 is about 4257.8135233944. The cubic root of 18128976 is about 262.6985998207.

The spelling of 18128976 in words is "eighteen million, one hundred twenty-eight thousand, nine hundred seventy-six".