28313085580 has 48 divisors (see below), whose sum is σ = 64665163584. Its totient is φ = 10350547200.

The previous prime is 28313085569. The next prime is 28313085587. The reversal of 28313085580 is 8558031382.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28313085587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 512832 + ... + 565351.

It is an arithmetic number, because the mean of its divisors is an integer number (1347190908).

Almost surely, 2^28313085580 is an apocalyptic number.

28313085580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28313085580 is an abundant number, since it is smaller than the sum of its proper divisors (36352078004).

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

28313085580 is a wasteful number, since it uses less digits than its factorization.

28313085580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078306 (or 1078304 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 28313085580 in words is "twenty-eight billion, three hundred thirteen million, eighty-five thousand, five hundred eighty".