256803678 has 24 divisors (see below), whose sum is σ = 558911808. Its totient is φ = 85216032.

The previous prime is 256803619. The next prime is 256803689. The reversal of 256803678 is 876308652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27975 + ... + 36002.

It is an arithmetic number, because the mean of its divisors is an integer number (23287992).

Almost surely, 2^256803678 is an apocalyptic number.

256803678 is an abundant number, since it is smaller than the sum of its proper divisors (302108130).

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

256803678 is a wasteful number, since it uses less digits than its factorization.

256803678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64208 (or 64205 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 256803678 is about 16025.0952571272. The cubic root of 256803678 is about 635.6241846417.

The spelling of 256803678 in words is "two hundred fifty-six million, eight hundred three thousand, six hundred seventy-eight".