18256896 has 132 divisors (see below), whose sum is σ = 60460192. Its totient is φ = 5197824.

The previous prime is 18256877. The next prime is 18256907. The reversal of 18256896 is 69865281.

18256896 is a `hidden beast` number, since 1 + 82 + 568 + 9 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 in 11 ways as a sum of consecutive naturals, for example, 64371 + ... + 64653.

Almost surely, 2^18256896 is an apocalyptic number.

18256896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18256896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30230096).

18256896 is an abundant number, since it is smaller than the sum of its proper divisors (42203296).

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

18256896 is a wasteful number, since it uses less digits than its factorization.

18256896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 295 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 18256896 is about 4272.8089121794. The cubic root of 18256896 is about 263.3150287264.

The spelling of 18256896 in words is "eighteen million, two hundred fifty-six thousand, eight hundred ninety-six".