256296730 has 8 divisors (see below), whose sum is σ = 461334132. Its totient is φ = 102518688.

The previous prime is 256296721. The next prime is 256296731. The reversal of 256296730 is 37692652.

256296730 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 256288081 + 8649 = 16009^2 + 93^2 .

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

It is not an unprimeable number, because it can be changed into a prime (256296731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12814827 + ... + 12814846.

Almost surely, 2^256296730 is an apocalyptic number.

256296730 is a deficient number, since it is larger than the sum of its proper divisors (205037402).

256296730 is a wasteful number, since it uses less digits than its factorization.

256296730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25629680.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 256296730 is about 16009.2701270233. The cubic root of 256296730 is about 635.2056539336.

The spelling of 256296730 in words is "two hundred fifty-six million, two hundred ninety-six thousand, seven hundred thirty".