18386672 has 10 divisors (see below), whose sum is σ = 35624208. Its totient is φ = 9193328.

The previous prime is 18386663. The next prime is 18386677. The reversal of 18386672 is 27668381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18386677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574568 + ... + 574599.

Almost surely, 2^18386672 is an apocalyptic number.

It is an amenable number.

18386672 is a deficient number, since it is larger than the sum of its proper divisors (17237536).

18386672 is a wasteful number, since it uses less digits than its factorization.

18386672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149175 (or 1149169 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 18386672 is about 4287.9682834648. The cubic root of 18386672 is about 263.9374660580.

The spelling of 18386672 in words is "eighteen million, three hundred eighty-six thousand, six hundred seventy-two".