766921928 has 16 divisors (see below), whose sum is σ = 1513662000. Its totient is φ = 363278736.

The previous prime is 766921873. The next prime is 766921937. The reversal of 766921928 is 829129667.

It is a happy number.

766921928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2522618 + ... + 2522921.

It is an arithmetic number, because the mean of its divisors is an integer number (94603875).

Almost surely, 2^766921928 is an apocalyptic number.

It is an amenable number.

766921928 is a deficient number, since it is larger than the sum of its proper divisors (746740072).

766921928 is a wasteful number, since it uses less digits than its factorization.

766921928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045564 (or 5045560 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 766921928 is about 27693.3553041158. The cubic root of 766921928 is about 915.3426918663.

The spelling of 766921928 in words is "seven hundred sixty-six million, nine hundred twenty-one thousand, nine hundred twenty-eight".