18038976 has 56 divisors (see below), whose sum is σ = 48768000. Its totient is φ = 5882112.

The previous prime is 18038963. The next prime is 18038987. The reversal of 18038976 is 67983081.

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 7 ways as a sum of consecutive naturals, for example, 8025 + ... + 10023.

Almost surely, 2^18038976 is an apocalyptic number.

18038976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18038976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24384000).

18038976 is an abundant number, since it is smaller than the sum of its proper divisors (30729024).

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

18038976 is a wasteful number, since it uses less digits than its factorization.

18038976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 18038976 is about 4247.2315689164. The cubic root of 18038976 is about 262.2631623439.

The spelling of 18038976 in words is "eighteen million, thirty-eight thousand, nine hundred seventy-six".