18255904 has 12 divisors (see below), whose sum is σ = 35941374. Its totient is φ = 9127936.

The previous prime is 18255901. The next prime is 18255929. The reversal of 18255904 is 40955281.

It can be written as a sum of positive squares in only one way, i.e., 18079504 + 176400 = 4252^2 + 420^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 18255904 parts by 6042 straight cuts.

It is a self number, because there is not a number n which added to its sum of digits gives 18255904.

It is not an unprimeable number, because it can be changed into a prime (18255901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285217 + ... + 285280.

Almost surely, 2^18255904 is an apocalyptic number.

It is an amenable number.

18255904 is a deficient number, since it is larger than the sum of its proper divisors (17685470).

18255904 is an equidigital number, since it uses as much as digits as its factorization.

18255904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570507 (or 570499 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 18255904 is about 4272.6928277142. The cubic root of 18255904 is about 263.3102595104.

The spelling of 18255904 in words is "eighteen million, two hundred fifty-five thousand, nine hundred four".