805148256 has 96 divisors (see below), whose sum is σ = 2427062400. Its totient is φ = 231137280.

The previous prime is 805148233. The next prime is 805148263. The reversal of 805148256 is 652841508.

805148256 is a nontrivial binomial coefficient, being equal to C(40129, 2).

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 40128.

It is an arithmetic number, because the mean of its divisors is an integer number (25281900).

Almost surely, 2^805148256 is an apocalyptic number.

805148256 is the 40128-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805148256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1213531200).

805148256 is an abundant number, since it is smaller than the sum of its proper divisors (1621914144).

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

805148256 is a wasteful number, since it uses less digits than its factorization.

805148256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40172 (or 40164 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 805148256 is about 28375.1344666417. The cubic root of 805148256 is about 930.3048509213.

The spelling of 805148256 in words is "eight hundred five million, one hundred forty-eight thousand, two hundred fifty-six".