7864728280 has 16 divisors (see below), whose sum is σ = 17695638720. Its totient is φ = 3145891296.

The previous prime is 7864728269. The next prime is 7864728301. The reversal of 7864728280 is 828274687.

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, 98309064 + ... + 98309143.

It is an arithmetic number, because the mean of its divisors is an integer number (1105977420).

Almost surely, 2^7864728280 is an apocalyptic number.

It is an amenable number.

7864728280 is an abundant number, since it is smaller than the sum of its proper divisors (9830910440).

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

7864728280 is a wasteful number, since it uses less digits than its factorization.

7864728280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196618218 (or 196618214 counting only the distinct ones).

The product of its (nonzero) digits is 2408448, while the sum is 52.

The square root of 7864728280 is about 88683.3032763214. The cubic root of 7864728280 is about 1988.6632167590.

The spelling of 7864728280 in words is "seven billion, eight hundred sixty-four million, seven hundred twenty-eight thousand, two hundred eighty".