256312254 has 16 divisors (see below), whose sum is σ = 559226880. Its totient is φ = 77670360.

The previous prime is 256312229. The next prime is 256312297. The reversal of 256312254 is 452213652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1941694 + ... + 1941825.

It is an arithmetic number, because the mean of its divisors is an integer number (34951680).

Almost surely, 2^256312254 is an apocalyptic number.

256312254 is an abundant number, since it is smaller than the sum of its proper divisors (302914626).

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

256312254 is a wasteful number, since it uses less digits than its factorization.

256312254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3883535.

The product of its digits is 14400, while the sum is 30.

The square root of 256312254 is about 16009.7549637713. The cubic root of 256312254 is about 635.2184785653.

The spelling of 256312254 in words is "two hundred fifty-six million, three hundred twelve thousand, two hundred fifty-four".