18179472 has 20 divisors (see below), whose sum is σ = 46963760. Its totient is φ = 6059808.

The previous prime is 18179471. The next prime is 18179503. The reversal of 18179472 is 27497181.

It is a self number, because there is not a number n which added to its sum of digits gives 18179472.

It is not an unprimeable number, because it can be changed into a prime (18179471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189322 + ... + 189417.

It is an arithmetic number, because the mean of its divisors is an integer number (2348188).

Almost surely, 2^18179472 is an apocalyptic number.

18179472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18179472 is an abundant number, since it is smaller than the sum of its proper divisors (28784288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18179472 is a wasteful number, since it uses less digits than its factorization.

18179472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378750 (or 378744 counting only the distinct ones).

The product of its digits is 28224, while the sum is 39.

The square root of 18179472 is about 4263.7392040321. The cubic root of 18179472 is about 262.9422784360.

The spelling of 18179472 in words is "eighteen million, one hundred seventy-nine thousand, four hundred seventy-two".