18293312 has 28 divisors (see below), whose sum is σ = 36513516. Its totient is φ = 9093120.

The previous prime is 18293311. The next prime is 18293329. The reversal of 18293312 is 21339281.

It can be written as a sum of positive squares in 2 ways, for example, as 6071296 + 12222016 = 2464^2 + 3496^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18293311) 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, 11612 + ... + 13092.

Almost surely, 2^18293312 is an apocalyptic number.

It is an amenable number.

18293312 is a deficient number, since it is larger than the sum of its proper divisors (18220204).

18293312 is a wasteful number, since it uses less digits than its factorization.

18293312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1676 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 18293312 is about 4277.0681547060. The cubic root of 18293312 is about 263.4899856610.

The spelling of 18293312 in words is "eighteen million, two hundred ninety-three thousand, three hundred twelve".