256702272 has 56 divisors (see below), whose sum is σ = 681325536. Its totient is φ = 85298688.

The previous prime is 256702249. The next prime is 256702273. The reversal of 256702272 is 272207652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256702273) 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, 64698 + ... + 68550.

Almost surely, 2^256702272 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 256702272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340662768).

256702272 is an abundant number, since it is smaller than the sum of its proper divisors (424623264).

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

256702272 is a wasteful number, since it uses less digits than its factorization.

256702272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4215 (or 4205 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 256702272 is about 16021.9309697677. The cubic root of 256702272 is about 635.5405090593.

The spelling of 256702272 in words is "two hundred fifty-six million, seven hundred two thousand, two hundred seventy-two".