7928655928 has 8 divisors (see below), whose sum is σ = 14866229880. Its totient is φ = 3964327960.

The previous prime is 7928655919. The next prime is 7928655947. The reversal of 7928655928 is 8295568297.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495540988 + ... + 495541003.

It is an arithmetic number, because the mean of its divisors is an integer number (1858278735).

Almost surely, 2^7928655928 is an apocalyptic number.

It is an amenable number.

7928655928 is a deficient number, since it is larger than the sum of its proper divisors (6937573952).

7928655928 is a wasteful number, since it uses less digits than its factorization.

7928655928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991081997 (or 991081993 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 61.

The square root of 7928655928 is about 89043.0004436059. Note that the first 3 decimals coincide. The cubic root of 7928655928 is about 1994.0368990501.

The spelling of 7928655928 in words is "seven billion, nine hundred twenty-eight million, six hundred fifty-five thousand, nine hundred twenty-eight".