256226763 has 8 divisors (see below), whose sum is σ = 367915408. Its totient is φ = 157677984.

The previous prime is 256226741. The next prime is 256226791. The reversal of 256226763 is 367622652.

It is a happy number.

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

It is not a de Polignac number, because 256226763 - 2¹⁸ = 255964619 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 6569917 = 256226763 / (2 + 5 + 6 + 2 + 2 + 6 + 7 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256226863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3284920 + ... + 3284997.

It is an arithmetic number, because the mean of its divisors is an integer number (45989426).

Almost surely, 2^256226763 is an apocalyptic number.

256226763 is a deficient number, since it is larger than the sum of its proper divisors (111688645).

256226763 is a wasteful number, since it uses less digits than its factorization.

256226763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569933.

The product of its digits is 181440, while the sum is 39.

The square root of 256226763 is about 16007.0847751863. The cubic root of 256226763 is about 635.1478466167.

It can be divided in two parts, 25622 and 6763, that added together give a triangular number (32385 = T₂₅₄).

The spelling of 256226763 in words is "two hundred fifty-six million, two hundred twenty-six thousand, seven hundred sixty-three".