256370 has 16 divisors (see below), whose sum is σ = 476928. Its totient is φ = 99120.

The previous prime is 256369. The next prime is 256391. The reversal of 256370 is 73652.

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 256370.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104 + ... + 723.

It is an arithmetic number, because the mean of its divisors is an integer number (29808).

2²⁵⁶³⁷⁰ is an apocalyptic number.

256370 is a deficient number, since it is larger than the sum of its proper divisors (220558).

256370 is a wasteful number, since it uses less digits than its factorization.

256370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 256370 is about 506.3299319614. The cubic root of 256370 is about 63.5266178940.

It can be divided in two parts, 256 and 370, that added together give a palindrome (626).

The spelling of 256370 in words is "two hundred fifty-six thousand, three hundred seventy".