1028800791 has 8 divisors (see below), whose sum is σ = 1524149360. Its totient is φ = 685867176.

The previous prime is 1028800789. The next prime is 1028800793. The reversal of 1028800791 is 1970088201.

It is an interprime number because it is at equal distance from previous prime (1028800789) and next prime (1028800793).

It is not a de Polignac number, because 1028800791 - 2¹ = 1028800789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028800793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19051840 + ... + 19051893.

It is an arithmetic number, because the mean of its divisors is an integer number (190518670).

Almost surely, 2^1028800791 is an apocalyptic number.

1028800791 is a deficient number, since it is larger than the sum of its proper divisors (495348569).

1028800791 is an equidigital number, since it uses as much as digits as its factorization.

1028800791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38103742 (or 38103736 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 1028800791 is about 32074.9246452739. The cubic root of 1028800791 is about 1009.5095455560.

Adding to 1028800791 its reverse (1970088201), we get a palindrome (2998888992).

The spelling of 1028800791 in words is "one billion, twenty-eight million, eight hundred thousand, seven hundred ninety-one".