18272182 has 8 divisors (see below), whose sum is σ = 27873000. Its totient is φ = 8981184.

The previous prime is 18272179. The next prime is 18272207. The reversal of 18272182 is 28127281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18272182² = 667745270082248, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77307 + ... + 77542.

It is an arithmetic number, because the mean of its divisors is an integer number (3484125).

Almost surely, 2^18272182 is an apocalyptic number.

18272182 is a deficient number, since it is larger than the sum of its proper divisors (9600818).

18272182 is a wasteful number, since it uses less digits than its factorization.

18272182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154910.

The product of its digits is 3584, while the sum is 31.

The square root of 18272182 is about 4274.5972909737. The cubic root of 18272182 is about 263.3884970513.

The spelling of 18272182 in words is "eighteen million, two hundred seventy-two thousand, one hundred eighty-two".