256276218 has 32 divisors (see below), whose sum is σ = 588579840. Its totient is φ = 73571760.

The previous prime is 256276213. The next prime is 256276243. The reversal of 256276218 is 812672652.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (256276211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100930 + ... + 103437.

It is an arithmetic number, because the mean of its divisors is an integer number (18393120).

Almost surely, 2^256276218 is an apocalyptic number.

256276218 is an abundant number, since it is smaller than the sum of its proper divisors (332303622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

256276218 is a wasteful number, since it uses less digits than its factorization.

256276218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204402.

The product of its digits is 80640, while the sum is 39.

The square root of 256276218 is about 16008.6294853744. The cubic root of 256276218 is about 635.1887078389.

The spelling of 256276218 in words is "two hundred fifty-six million, two hundred seventy-six thousand, two hundred eighteen".