18768256 has 32 divisors (see below), whose sum is σ = 40269600. Its totient is φ = 8661504.

The previous prime is 18768247. The next prime is 18768259. The reversal of 18768256 is 65286781.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18768259) 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, 3976 + ... + 7303.

It is an arithmetic number, because the mean of its divisors is an integer number (1258425).

Almost surely, 2^18768256 is an apocalyptic number.

18768256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18768256 is an abundant number, since it is smaller than the sum of its proper divisors (21501344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18768256 is a wasteful number, since it uses less digits than its factorization.

18768256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11306 (or 11294 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 18768256 is about 4332.2345273542. The cubic root of 18768256 is about 265.7508360823.

The spelling of 18768256 in words is "eighteen million, seven hundred sixty-eight thousand, two hundred fifty-six".