2568728992 has 12 divisors (see below), whose sum is σ = 5057185266. Its totient is φ = 1284364480.

The previous prime is 2568728927. The next prime is 2568729001. The reversal of 2568728992 is 2998278652.

It can be written as a sum of positive squares in only one way, i.e., 1555198096 + 1013530896 = 39436^2 + 31836^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40136359 + ... + 40136422.

Almost surely, 2^2568728992 is an apocalyptic number.

It is an amenable number.

2568728992 is a deficient number, since it is larger than the sum of its proper divisors (2488456274).

2568728992 is an equidigital number, since it uses as much as digits as its factorization.

2568728992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80272791 (or 80272783 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 58.

The square root of 2568728992 is about 50682.6300817154. The cubic root of 2568728992 is about 1369.5338233103.

The spelling of 2568728992 in words is "two billion, five hundred sixty-eight million, seven hundred twenty-eight thousand, nine hundred ninety-two".