256016 has 10 divisors (see below), whose sum is σ = 496062. Its totient is φ = 128000.

The previous prime is 255989. The next prime is 256019. The reversal of 256016 is 610652.

It can be written as a sum of positive squares in only one way, i.e., 246016 + 10000 = 496^2 + 100^2 .

It is not an unprimeable number, because it can be changed into a prime (256019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7985 + ... + 8016.

2²⁵⁶⁰¹⁶ is an apocalyptic number.

It is an amenable number.

256016 is a deficient number, since it is larger than the sum of its proper divisors (240046).

256016 is a wasteful number, since it uses less digits than its factorization.

256016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16009 (or 16003 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 256016 is about 505.9802367682. The cubic root of 256016 is about 63.4973648854.

Adding to 256016 its sum of digits (20), we get a square (256036 = 506²).

Adding to 256016 its reverse (610652), we get a palindrome (866668).

The spelling of 256016 in words is "two hundred fifty-six thousand, sixteen".