256902336 has 84 divisors (see below), whose sum is σ = 743068872. Its totient is φ = 84854784.

The previous prime is 256902319. The next prime is 256902337. The reversal of 256902336 is 633209652.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 256902336.

It is not an unprimeable number, because it can be changed into a prime (256902337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63115 + ... + 67061.

It is an arithmetic number, because the mean of its divisors is an integer number (8846058).

Almost surely, 2^256902336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256902336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371534436).

256902336 is an abundant number, since it is smaller than the sum of its proper divisors (486166536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256902336 is a wasteful number, since it uses less digits than its factorization.

256902336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4065 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 256902336 is about 16028.1731959697. The cubic root of 256902336 is about 635.7055715628.

The spelling of 256902336 in words is "two hundred fifty-six million, nine hundred two thousand, three hundred thirty-six".