2791564728 has 16 divisors (see below), whose sum is σ = 6978911880. Its totient is φ = 930521568.

The previous prime is 2791564709. The next prime is 2791564733. The reversal of 2791564728 is 8274651972.

It is a happy number.

It is a super-2 number, since 2×2791564728² = 15585667261227427968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58157575 + ... + 58157622.

Almost surely, 2^2791564728 is an apocalyptic number.

It is an amenable number.

2791564728 is an abundant number, since it is smaller than the sum of its proper divisors (4187347152).

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

2791564728 is a wasteful number, since it uses less digits than its factorization.

2791564728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116315206 (or 116315202 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 51.

The square root of 2791564728 is about 52835.2602719055. The cubic root of 2791564728 is about 1408.0429445730.

The spelling of 2791564728 in words is "two billion, seven hundred ninety-one million, five hundred sixty-four thousand, seven hundred twenty-eight".