768131844 has 12 divisors (see below), whose sum is σ = 1792307664. Its totient is φ = 256043944.

The previous prime is 768131839. The next prime is 768131869. The reversal of 768131844 is 448131867.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 768131796 and 768131805.

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, 32005482 + ... + 32005505.

It is an arithmetic number, because the mean of its divisors is an integer number (149358972).

Almost surely, 2^768131844 is an apocalyptic number.

It is an amenable number.

768131844 is an abundant number, since it is smaller than the sum of its proper divisors (1024175820).

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

768131844 is a wasteful number, since it uses less digits than its factorization.

768131844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64010994 (or 64010992 counting only the distinct ones).

The product of its digits is 129024, while the sum is 42.

The square root of 768131844 is about 27715.1915742973. The cubic root of 768131844 is about 915.8237951083.

The spelling of 768131844 in words is "seven hundred sixty-eight million, one hundred thirty-one thousand, eight hundred forty-four".