70256256 has 128 divisors (see below), whose sum is σ = 217382400. Its totient is φ = 19688448.

The previous prime is 70256239. The next prime is 70256279. The reversal of 70256256 is 65265207.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158371 + ... + 158813.

It is an arithmetic number, because the mean of its divisors is an integer number (1698300).

Almost surely, 2^70256256 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 70256256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108691200).

70256256 is an abundant number, since it is smaller than the sum of its proper divisors (147126144).

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

70256256 is a wasteful number, since it uses less digits than its factorization.

70256256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 70256256 is about 8381.9005004832. The cubic root of 70256256 is about 412.6308242531.

The spelling of 70256256 in words is "seventy million, two hundred fifty-six thousand, two hundred fifty-six".