805090340 has 24 divisors (see below), whose sum is σ = 1697129280. Its totient is φ = 320809568.

The previous prime is 805090339. The next prime is 805090361. The reversal of 805090340 is 43090508.

It is a super-2 number, since 2×805090340² = 1296340911122631200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71270 + ... + 81789.

It is an arithmetic number, because the mean of its divisors is an integer number (70713720).

Almost surely, 2^805090340 is an apocalyptic number.

It is an amenable number.

805090340 is an abundant number, since it is smaller than the sum of its proper divisors (892038940).

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

805090340 is a wasteful number, since it uses less digits than its factorization.

805090340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153331 (or 153329 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 805090340 is about 28374.1139068694. The cubic root of 805090340 is about 930.2825441278.

The spelling of 805090340 in words is "eight hundred five million, ninety thousand, three hundred forty".