2660128072 has 24 divisors (see below), whose sum is σ = 5802065910. Its totient is φ = 1140054720.

The previous prime is 2660128069. The next prime is 2660128109. The reversal of 2660128072 is 2708210662.

It can be written as a sum of positive squares in only one way, i.e., 1334148676 + 1325979396 = 36526^2 + 36414^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3392629 + ... + 3393412.

Almost surely, 2^2660128072 is an apocalyptic number.

It is an amenable number.

2660128072 is an abundant number, since it is smaller than the sum of its proper divisors (3141937838).

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

2660128072 is a wasteful number, since it uses less digits than its factorization.

2660128072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6786061 (or 6786050 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 2660128072 is about 51576.4294227509. The cubic root of 2660128072 is about 1385.5882189976.

The spelling of 2660128072 in words is "two billion, six hundred sixty million, one hundred twenty-eight thousand, seventy-two".