805902340 has 24 divisors (see below), whose sum is σ = 1791948312. Its totient is φ = 303398400.

The previous prime is 805902329. The next prime is 805902341. The reversal of 805902340 is 43209508.

It can be written as a sum of positive squares in 4 ways, for example, as 321198084 + 484704256 = 17922^2 + 22016^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (805902341) by changing a digit.

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, 1184811 + ... + 1185490.

It is an arithmetic number, because the mean of its divisors is an integer number (74664513).

Almost surely, 2^805902340 is an apocalyptic number.

It is an amenable number.

805902340 is an abundant number, since it is smaller than the sum of its proper divisors (986045972).

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

805902340 is a wasteful number, since it uses less digits than its factorization.

805902340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370327 (or 2370325 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 805902340 is about 28388.4191176613. The cubic root of 805902340 is about 930.5951945941.

The spelling of 805902340 in words is "eight hundred five million, nine hundred two thousand, three hundred forty".