18473272 has 16 divisors (see below), whose sum is σ = 35755200. Its totient is φ = 8938560.

The previous prime is 18473233. The next prime is 18473297. The reversal of 18473272 is 27237481.

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, 36997 + ... + 37492.

It is an arithmetic number, because the mean of its divisors is an integer number (2234700).

Almost surely, 2^18473272 is an apocalyptic number.

It is an amenable number.

18473272 is a deficient number, since it is larger than the sum of its proper divisors (17281928).

18473272 is a wasteful number, since it uses less digits than its factorization.

18473272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74526 (or 74522 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 18473272 is about 4298.0544435826. The cubic root of 18473272 is about 264.3511931535.

The spelling of 18473272 in words is "eighteen million, four hundred seventy-three thousand, two hundred seventy-two".