256802812 has 24 divisors (see below), whose sum is σ = 514000256. Its totient is φ = 109973808.

The previous prime is 256802779. The next prime is 256802813. The reversal of 256802812 is 218208652.

It is a super-2 number, since 2×256802812² = 131895368502214688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256802813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45583 + ... + 50905.

Almost surely, 2^256802812 is an apocalyptic number.

It is an amenable number.

256802812 is an abundant number, since it is smaller than the sum of its proper divisors (257197444).

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

256802812 is a wasteful number, since it uses less digits than its factorization.

256802812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7057 (or 7055 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 256802812 is about 16025.0682369842. The cubic root of 256802812 is about 635.6234701515.

The spelling of 256802812 in words is "two hundred fifty-six million, eight hundred two thousand, eight hundred twelve".