805320988 has 12 divisors (see below), whose sum is σ = 1470586320. Its totient is φ = 385153472.

The previous prime is 805320977. The next prime is 805321001. The reversal of 805320988 is 889023508.

It is a super-2 number, since 2×805320988² = 1297083787426592288, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4376653 + ... + 4376836.

It is an arithmetic number, because the mean of its divisors is an integer number (122548860).

Almost surely, 2^805320988 is an apocalyptic number.

It is an amenable number.

805320988 is a deficient number, since it is larger than the sum of its proper divisors (665265332).

805320988 is a wasteful number, since it uses less digits than its factorization.

805320988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8753516 (or 8753514 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 805320988 is about 28378.1780246724. The cubic root of 805320988 is about 930.3713736295.

The spelling of 805320988 in words is "eight hundred five million, three hundred twenty thousand, nine hundred eighty-eight".