256322 has 16 divisors (see below), whose sum is σ = 428544. Its totient is φ = 114000.

The previous prime is 256313. The next prime is 256337. The reversal of 256322 is 223652.

It is a happy number.

256322 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2² + 5⁷ + 3¹¹ + 6 + 2⁴ + 2¹⁰ .

It is a junction number, because it is equal to n+sod(n) for n = 256294 and 256303.

It is an unprimeable number.

256322 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1247 + ... + 1437.

It is an arithmetic number, because the mean of its divisors is an integer number (26784).

2²⁵⁶³²² is an apocalyptic number.

256322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

256322 is a deficient number, since it is larger than the sum of its proper divisors (172222).

256322 is a wasteful number, since it uses less digits than its factorization.

256322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its digits is 720, while the sum is 20.

The square root of 256322 is about 506.2825298191. The cubic root of 256322 is about 63.5226529632.

Adding to 256322 its reverse (223652), we get a palindrome (479974).

The spelling of 256322 in words is "two hundred fifty-six thousand, three hundred twenty-two".