18672512 has 16 divisors (see below), whose sum is σ = 37199400. Its totient is φ = 9336192.

The previous prime is 18672499. The next prime is 18672517. The reversal of 18672512 is 21527681.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18672517) 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, 72812 + ... + 73067.

Almost surely, 2^18672512 is an apocalyptic number.

It is an amenable number.

18672512 is a deficient number, since it is larger than the sum of its proper divisors (18526888).

18672512 is an equidigital number, since it uses as much as digits as its factorization.

18672512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145893 (or 145881 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 18672512 is about 4321.1702118755. The cubic root of 18672512 is about 265.2981668221.

The spelling of 18672512 in words is "eighteen million, six hundred seventy-two thousand, five hundred twelve".