2628979820 has 48 divisors (see below), whose sum is σ = 5641574400. Its totient is φ = 1028771520.

The previous prime is 2628979789. The next prime is 2628980009. The reversal of 2628979820 is 289798262.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243701 + ... + 254259.

It is an arithmetic number, because the mean of its divisors is an integer number (117532800).

Almost surely, 2^2628979820 is an apocalyptic number.

2628979820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2628979820 is an abundant number, since it is smaller than the sum of its proper divisors (3012594580).

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

2628979820 is a wasteful number, since it uses less digits than its factorization.

2628979820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10838 (or 10836 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 2628979820 is about 51273.5781860404. The cubic root of 2628979820 is about 1380.1588803980.

The spelling of 2628979820 in words is "two billion, six hundred twenty-eight million, nine hundred seventy-nine thousand, eight hundred twenty".