256928970 has 16 divisors (see below), whose sum is σ = 616629600. Its totient is φ = 68514384.

The previous prime is 256928953. The next prime is 256928977. The reversal of 256928970 is 79829652.

256928970 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (256928977) 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, 4282120 + ... + 4282179.

It is an arithmetic number, because the mean of its divisors is an integer number (38539350).

Almost surely, 2^256928970 is an apocalyptic number.

256928970 is an abundant number, since it is smaller than the sum of its proper divisors (359700630).

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

256928970 is a wasteful number, since it uses less digits than its factorization.

256928970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564309.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 256928970 is about 16029.0040239561. The cubic root of 256928970 is about 635.7275394403.

The spelling of 256928970 in words is "two hundred fifty-six million, nine hundred twenty-eight thousand, nine hundred seventy".