18284272 has 20 divisors (see below), whose sum is σ = 35541376. Its totient is φ = 9112320.

The previous prime is 18284263. The next prime is 18284293. The reversal of 18284272 is 27248281.

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, 3697 + ... + 7087.

Almost surely, 2^18284272 is an apocalyptic number.

It is an amenable number.

18284272 is a deficient number, since it is larger than the sum of its proper divisors (17257104).

18284272 is a wasteful number, since it uses less digits than its factorization.

18284272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3736 (or 3730 counting only the distinct ones).

The product of its digits is 14336, while the sum is 34.

The square root of 18284272 is about 4276.0112254296. The cubic root of 18284272 is about 263.4465755896.

The spelling of 18284272 in words is "eighteen million, two hundred eighty-four thousand, two hundred seventy-two".