7930216872 has 80 divisors (see below), whose sum is σ = 22309362900. Its totient is φ = 2631813120.

The previous prime is 7930216817. The next prime is 7930216873. The reversal of 7930216872 is 2786120397.

It can be written as a sum of positive squares in 2 ways, for example, as 7044916356 + 885300516 = 83934^2 + 29754^2 .

It is not an unprimeable number, because it can be changed into a prime (7930216873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 121672 + ... + 175112.

Almost surely, 2^7930216872 is an apocalyptic number.

7930216872 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7930216872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11154681450).

7930216872 is an abundant number, since it is smaller than the sum of its proper divisors (14379146028).

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

7930216872 is a wasteful number, since it uses less digits than its factorization.

7930216872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53688 (or 53675 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 7930216872 is about 89051.7651256841. The cubic root of 7930216872 is about 1994.1677482854.

The spelling of 7930216872 in words is "seven billion, nine hundred thirty million, two hundred sixteen thousand, eight hundred seventy-two".