256918450 has 96 divisors (see below), whose sum is σ = 530323200. Its totient is φ = 92206080.

The previous prime is 256918439. The next prime is 256918451. The reversal of 256918450 is 54819652.

It is not an unprimeable number, because it can be changed into a prime (256918451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2356996 + ... + 2357104.

It is an arithmetic number, because the mean of its divisors is an integer number (5524200).

Almost surely, 2^256918450 is an apocalyptic number.

256918450 is an abundant number, since it is smaller than the sum of its proper divisors (273404750).

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

256918450 is a wasteful number, since it uses less digits than its factorization.

256918450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 256918450 is about 16028.6758654606. The cubic root of 256918450 is about 635.7188626648.

The spelling of 256918450 in words is "two hundred fifty-six million, nine hundred eighteen thousand, four hundred fifty".