256323026 has 8 divisors (see below), whose sum is σ = 388804860. Its totient is φ = 126721408.

The previous prime is 256322981. The next prime is 256323047. The reversal of 256323026 is 620323652.

It can be written as a sum of positive squares in 2 ways, for example, as 186349801 + 69973225 = 13651^2 + 8365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 256323026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 719831 + ... + 720186.

Almost surely, 2^256323026 is an apocalyptic number.

256323026 is a deficient number, since it is larger than the sum of its proper divisors (132481834).

256323026 is a wasteful number, since it uses less digits than its factorization.

256323026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440108.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 256323026 is about 16010.0913801265. The cubic root of 256323026 is about 635.2273771873.

Adding to 256323026 its reverse (620323652), we get a palindrome (876646678).

The spelling of 256323026 in words is "two hundred fifty-six million, three hundred twenty-three thousand, twenty-six".