7128416672 has 24 divisors (see below), whose sum is σ = 15113615076. Its totient is φ = 3290038272.

The previous prime is 7128416651. The next prime is 7128416677. The reversal of 7128416672 is 2766148217.

It can be written as a sum of positive squares in 2 ways, for example, as 6065917456 + 1062499216 = 77884^2 + 32596^2 .

It is not an unprimeable number, because it can be changed into a prime (7128416677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8567393 + ... + 8568224.

Almost surely, 2^7128416672 is an apocalyptic number.

It is an amenable number.

7128416672 is an abundant number, since it is smaller than the sum of its proper divisors (7985198404).

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

7128416672 is a wasteful number, since it uses less digits than its factorization.

7128416672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17135640 (or 17135632 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 7128416672 is about 84429.9512732300. The cubic root of 7128416672 is about 1924.5580969791.

The spelling of 7128416672 in words is "seven billion, one hundred twenty-eight million, four hundred sixteen thousand, six hundred seventy-two".