256971214 has 16 divisors (see below), whose sum is σ = 399200256. Its totient is φ = 123931800.

The previous prime is 256971199. The next prime is 256971217. The reversal of 256971214 is 412179652.

256971214 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 (256971217) 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, 12619 + ... + 25945.

It is an arithmetic number, because the mean of its divisors is an integer number (24950016).

Almost surely, 2^256971214 is an apocalyptic number.

256971214 is a deficient number, since it is larger than the sum of its proper divisors (142229042).

256971214 is a wasteful number, since it uses less digits than its factorization.

256971214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13671.

The product of its digits is 30240, while the sum is 37.

The square root of 256971214 is about 16030.3217060669. The cubic root of 256971214 is about 635.7623794228.

The spelling of 256971214 in words is "two hundred fifty-six million, nine hundred seventy-one thousand, two hundred fourteen".