28030344080 has 40 divisors (see below), whose sum is σ = 65768465400. Its totient is φ = 11109270528.

The previous prime is 28030344071. The next prime is 28030344103. The reversal of 28030344080 is 8044303082.

It can be written as a sum of positive squares in 4 ways, for example, as 5057485456 + 22972858624 = 71116^2 + 151568^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 1598525 + ... + 1615964.

It is an arithmetic number, because the mean of its divisors is an integer number (1644211635).

Almost surely, 2^28030344080 is an apocalyptic number.

28030344080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28030344080 is an abundant number, since it is smaller than the sum of its proper divisors (37738121320).

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

28030344080 is a wasteful number, since it uses less digits than its factorization.

28030344080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214611 (or 3214605 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The spelling of 28030344080 in words is "twenty-eight billion, thirty million, three hundred forty-four thousand, eighty".