18041256 has 96 divisors (see below), whose sum is σ = 51667200. Its totient is φ = 5679360.

The previous prime is 18041251. The next prime is 18041263. The reversal of 18041256 is 65214081.

It is not an unprimeable number, because it can be changed into a prime (18041251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131620 + ... + 131756.

It is an arithmetic number, because the mean of its divisors is an integer number (538200).

Almost surely, 2^18041256 is an apocalyptic number.

It is a pronic number, being equal to 4247×4248.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18041256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25833600).

18041256 is an abundant number, since it is smaller than the sum of its proper divisors (33625944).

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

18041256 is a wasteful number, since it uses less digits than its factorization.

18041256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 18041256 is about 4247.4999705709. The cubic root of 18041256 is about 262.2742112863.

The spelling of 18041256 in words is "eighteen million, forty-one thousand, two hundred fifty-six".