256274336 has 12 divisors (see below), whose sum is σ = 504540162. Its totient is φ = 128137152.

The previous prime is 256274323. The next prime is 256274351. The reversal of 256274336 is 633472652.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 255360400 + 913936 = 15980^2 + 956^2 .

It is a super-3 number, since 3×256274336³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 256274336.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4004255 + ... + 4004318.

Almost surely, 2^256274336 is an apocalyptic number.

It is an amenable number.

256274336 is a deficient number, since it is larger than the sum of its proper divisors (248265826).

256274336 is an equidigital number, since it uses as much as digits as its factorization.

256274336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8008583 (or 8008575 counting only the distinct ones).

The product of its digits is 181440, while the sum is 38.

The square root of 256274336 is about 16008.5707044695. The cubic root of 256274336 is about 635.1871529696.

The spelling of 256274336 in words is "two hundred fifty-six million, two hundred seventy-four thousand, three hundred thirty-six".