256322996 has 36 divisors (see below), whose sum is σ = 489821220. Its totient is φ = 117210240.

The previous prime is 256322981. The next prime is 256323047. The reversal of 256322996 is 699223652.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 76387600 + 179935396 = 8740^2 + 13414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38816 + ... + 44936.

It is an arithmetic number, because the mean of its divisors is an integer number (13606145).

Almost surely, 2^256322996 is an apocalyptic number.

It is an amenable number.

256322996 is a deficient number, since it is larger than the sum of its proper divisors (233498224).

256322996 is a wasteful number, since it uses less digits than its factorization.

256322996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6192 (or 6171 counting only the distinct ones).

The product of its digits is 349920, while the sum is 44.

The square root of 256322996 is about 16010.0904432174. The cubic root of 256322996 is about 635.2273524050.

The spelling of 256322996 in words is "two hundred fifty-six million, three hundred twenty-two thousand, nine hundred ninety-six".