805371912 has 24 divisors (see below), whose sum is σ = 2181215790. Its totient is φ = 268457280.

The previous prime is 805371893. The next prime is 805371949. The reversal of 805371912 is 219173508.

It can be written as a sum of positive squares in only one way, i.e., 599564196 + 205807716 = 24486^2 + 14346^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5592789 + ... + 5592932.

Almost surely, 2^805371912 is an apocalyptic number.

It is an amenable number.

805371912 is an abundant number, since it is smaller than the sum of its proper divisors (1375843878).

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

805371912 is a wasteful number, since it uses less digits than its factorization.

805371912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11185733 (or 11185726 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 805371912 is about 28379.0752492043. The cubic root of 805371912 is about 930.3909837121.

The spelling of 805371912 in words is "eight hundred five million, three hundred seventy-one thousand, nine hundred twelve".