805256 has 32 divisors (see below), whose sum is σ = 1658880. Its totient is φ = 364800.

The previous prime is 805249. The next prime is 805267. The reversal of 805256 is 652508.

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4121 + ... + 4311.

It is an arithmetic number, because the mean of its divisors is an integer number (51840).

2⁸⁰⁵²⁵⁶ is an apocalyptic number.

It is an amenable number.

805256 is an abundant number, since it is smaller than the sum of its proper divisors (853624).

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

805256 is a wasteful number, since it uses less digits than its factorization.

805256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 805256 is about 897.3605741284. The cubic root of 805256 is about 93.0346346507.

The spelling of 805256 in words is "eight hundred five thousand, two hundred fifty-six".