28289425080 has 128 divisors (see below), whose sum is σ = 97029550080. Its totient is φ = 6463672320.

The previous prime is 28289425019. The next prime is 28289425121. The reversal of 28289425080 is 8052498282.

It is a happy number.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3033625 + ... + 3042935.

It is an arithmetic number, because the mean of its divisors is an integer number (758043360).

Almost surely, 2^28289425080 is an apocalyptic number.

28289425080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28289425080 is an abundant number, since it is smaller than the sum of its proper divisors (68740125000).

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

28289425080 is a wasteful number, since it uses less digits than its factorization.

28289425080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12949 (or 12945 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 48.

The spelling of 28289425080 in words is "twenty-eight billion, two hundred eighty-nine million, four hundred twenty-five thousand, eighty".