805768172 has 24 divisors (see below), whose sum is σ = 1540035840. Its totient is φ = 365841360.

The previous prime is 805768147. The next prime is 805768181. The reversal of 805768172 is 271867508.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30473 + ... + 50399.

It is an arithmetic number, because the mean of its divisors is an integer number (64168160).

Almost surely, 2^805768172 is an apocalyptic number.

It is an amenable number.

805768172 is a deficient number, since it is larger than the sum of its proper divisors (734267668).

805768172 is a wasteful number, since it uses less digits than its factorization.

805768172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20861 (or 20859 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 805768172 is about 28386.0559430154. The cubic root of 805768172 is about 930.5435493681.

The spelling of 805768172 in words is "eight hundred five million, seven hundred sixty-eight thousand, one hundred seventy-two".