771273872 has 20 divisors (see below), whose sum is σ = 1495170300. Its totient is φ = 385423488.

The previous prime is 771273857. The next prime is 771273883. The reversal of 771273872 is 278372177.

771273872 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 297079696 + 474194176 = 17236^2 + 21776^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 18818 + ... + 43550.

It is an arithmetic number, because the mean of its divisors is an integer number (74758515).

Almost surely, 2^771273872 is an apocalyptic number.

It is an amenable number.

771273872 is a deficient number, since it is larger than the sum of its proper divisors (723896428).

771273872 is a wasteful number, since it uses less digits than its factorization.

771273872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26690 (or 26684 counting only the distinct ones).

The product of its digits is 230496, while the sum is 44.

The square root of 771273872 is about 27771.8179455361. The cubic root of 771273872 is about 917.0708160069.

The spelling of 771273872 in words is "seven hundred seventy-one million, two hundred seventy-three thousand, eight hundred seventy-two".