256330263 has 8 divisors (see below), whose sum is σ = 390598528. Its totient is φ = 146474424.

The previous prime is 256330247. The next prime is 256330297. The reversal of 256330263 is 362033652.

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

It is not a de Polignac number, because 256330263 - 2⁴ = 256330247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256330263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256331263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6103081 + ... + 6103122.

It is an arithmetic number, because the mean of its divisors is an integer number (48824816).

Almost surely, 2^256330263 is an apocalyptic number.

256330263 is a deficient number, since it is larger than the sum of its proper divisors (134268265).

256330263 is a wasteful number, since it uses less digits than its factorization.

256330263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12206213.

The product of its (nonzero) digits is 19440, while the sum is 30.

The square root of 256330263 is about 16010.3173922318. The cubic root of 256330263 is about 635.2333554475.

The spelling of 256330263 in words is "two hundred fifty-six million, three hundred thirty thousand, two hundred sixty-three".