256164750 has 96 divisors (see below), whose sum is σ = 696934368. Its totient is φ = 67891200.

The previous prime is 256164739. The next prime is 256164757. The reversal of 256164750 is 57461652.

It is a happy number.

256164750 is a `hidden beast` number, since 2 + 5 + 6 + 1 + 647 + 5 + 0 = 666.

256164750 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256164757) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 578029 + ... + 578471.

It is an arithmetic number, because the mean of its divisors is an integer number (7259733).

Almost surely, 2^256164750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 256164750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (348467184).

256164750 is an abundant number, since it is smaller than the sum of its proper divisors (440769618).

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

256164750 is a wasteful number, since it uses less digits than its factorization.

256164750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723 (or 710 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 256164750 is about 16005.1476094412. The cubic root of 256164750 is about 635.0966021631.

The spelling of 256164750 in words is "two hundred fifty-six million, one hundred sixty-four thousand, seven hundred fifty".