1028976780 has 72 divisors (see below), whose sum is σ = 3119839632. Its totient is φ = 253284096.

The previous prime is 1028976779. The next prime is 1028976803. The reversal of 1028976780 is 876798201.

1028976780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40599 + ... + 60878.

It is an arithmetic number, because the mean of its divisors is an integer number (43331106).

Almost surely, 2^1028976780 is an apocalyptic number.

1028976780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1028976780 is an abundant number, since it is smaller than the sum of its proper divisors (2090862852).

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

1028976780 is a wasteful number, since it uses less digits than its factorization.

1028976780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101515 (or 101500 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 48.

The square root of 1028976780 is about 32077.6679326911. The cubic root of 1028976780 is about 1009.5671052726.

The spelling of 1028976780 in words is "one billion, twenty-eight million, nine hundred seventy-six thousand, seven hundred eighty".