256500270 has 80 divisors (see below), whose sum is σ = 742785120. Its totient is φ = 63135936.

The previous prime is 256500269. The next prime is 256500271. The reversal of 256500270 is 72005652.

256500270 is a `hidden beast` number, since 2 + 5 + 650 + 0 + 2 + 7 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (256500269) and next prime (256500271).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256500271) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1650 + ... + 22709.

It is an arithmetic number, because the mean of its divisors is an integer number (9284814).

Almost surely, 2^256500270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256500270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371392560).

256500270 is an abundant number, since it is smaller than the sum of its proper divisors (486284850).

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

256500270 is a wasteful number, since it uses less digits than its factorization.

256500270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24391 (or 24382 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 256500270 is about 16015.6258073171. The cubic root of 256500270 is about 635.3737605762.

The spelling of 256500270 in words is "two hundred fifty-six million, five hundred thousand, two hundred seventy".