18057268 has 6 divisors (see below), whose sum is σ = 31600226. Its totient is φ = 9028632.

The previous prime is 18057257. The next prime is 18057289. The reversal of 18057268 is 86275081.

It can be written as a sum of positive squares in only one way, i.e., 15194404 + 2862864 = 3898^2 + 1692^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2257155 + ... + 2257162.

Almost surely, 2^18057268 is an apocalyptic number.

It is an amenable number.

18057268 is a deficient number, since it is larger than the sum of its proper divisors (13542958).

18057268 is a wasteful number, since it uses less digits than its factorization.

18057268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514321 (or 4514319 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 37.

The square root of 18057268 is about 4249.3844260081. The cubic root of 18057268 is about 262.3517796642.

The spelling of 18057268 in words is "eighteen million, fifty-seven thousand, two hundred sixty-eight".