7928661576 has 64 divisors (see below), whose sum is σ = 21700235520. Its totient is φ = 2394112320.

The previous prime is 7928661529. The next prime is 7928661577. The reversal of 7928661576 is 6751668297.

It is not an unprimeable number, because it can be changed into a prime (7928661577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21651 + ... + 127773.

It is an arithmetic number, because the mean of its divisors is an integer number (339066180).

Almost surely, 2^7928661576 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7928661576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10850117760).

7928661576 is an abundant number, since it is smaller than the sum of its proper divisors (13771573944).

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

7928661576 is a wasteful number, since it uses less digits than its factorization.

7928661576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106426 (or 106422 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The square root of 7928661576 is about 89043.0321586142. The cubic root of 7928661576 is about 1994.0373725359.

The spelling of 7928661576 in words is "seven billion, nine hundred twenty-eight million, six hundred sixty-one thousand, five hundred seventy-six".