28503375560 has 32 divisors (see below), whose sum is σ = 69962832000. Its totient is φ = 10364863680.

The previous prime is 28503375541. The next prime is 28503375569. The reversal of 28503375560 is 6557330582.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (28503375569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32389760 + ... + 32390639.

It is an arithmetic number, because the mean of its divisors is an integer number (2186338500).

Almost surely, 2^28503375560 is an apocalyptic number.

28503375560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28503375560 is an abundant number, since it is smaller than the sum of its proper divisors (41459456440).

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

28503375560 is a wasteful number, since it uses less digits than its factorization.

28503375560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64780421 (or 64780417 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 44.

The spelling of 28503375560 in words is "twenty-eight billion, five hundred three million, three hundred seventy-five thousand, five hundred sixty".