18459472 has 20 divisors (see below), whose sum is σ = 36042336. Its totient is φ = 9158240.

The previous prime is 18459407. The next prime is 18459473. The reversal of 18459472 is 27495481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18459473) 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 in 3 ways as a sum of consecutive naturals, for example, 2308 + ... + 6499.

Almost surely, 2^18459472 is an apocalyptic number.

It is an amenable number.

18459472 is a deficient number, since it is larger than the sum of its proper divisors (17582864).

18459472 is a wasteful number, since it uses less digits than its factorization.

18459472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8946 (or 8940 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 18459472 is about 4296.4487661323. The cubic root of 18459472 is about 264.2853510865.

The spelling of 18459472 in words is "eighteen million, four hundred fifty-nine thousand, four hundred seventy-two".