256357814 has 12 divisors (see below), whose sum is σ = 386469756. Its totient is φ = 127536192.

The previous prime is 256357813. The next prime is 256357837. The reversal of 256357814 is 418753652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256357811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380582 + ... + 381254.

It is an arithmetic number, because the mean of its divisors is an integer number (32205813).

Almost surely, 2^256357814 is an apocalyptic number.

256357814 is a deficient number, since it is larger than the sum of its proper divisors (130111942).

256357814 is an frugal number, since it uses more digits than its factorization.

256357814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631 (or 958 counting only the distinct ones).

The product of its digits is 201600, while the sum is 41.

The square root of 256357814 is about 16011.1777830364. The cubic root of 256357814 is about 635.2561134408.

The spelling of 256357814 in words is "two hundred fifty-six million, three hundred fifty-seven thousand, eight hundred fourteen".