18674272 has 24 divisors (see below), whose sum is σ = 36864072. Its totient is φ = 9312000.

The previous prime is 18674269. The next prime is 18674287. The reversal of 18674272 is 27247681.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 18747 + ... + 19717.

It is an arithmetic number, because the mean of its divisors is an integer number (1536003).

Almost surely, 2^18674272 is an apocalyptic number.

It is an amenable number.

18674272 is a deficient number, since it is larger than the sum of its proper divisors (18189800).

18674272 is an equidigital number, since it uses as much as digits as its factorization.

18674272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582 (or 1574 counting only the distinct ones).

The product of its digits is 37632, while the sum is 37.

The square root of 18674272 is about 4321.3738556158. The cubic root of 18674272 is about 265.3065018925.

The spelling of 18674272 in words is "eighteen million, six hundred seventy-four thousand, two hundred seventy-two".