28360221260 has 48 divisors (see below), whose sum is σ = 69180363840. Its totient is φ = 9564099840.

The previous prime is 28360221251. The next prime is 28360221293. The reversal of 28360221260 is 6212206382.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1651895 + ... + 1668974.

It is an arithmetic number, because the mean of its divisors is an integer number (1441257580).

Almost surely, 2^28360221260 is an apocalyptic number.

28360221260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28360221260 is an abundant number, since it is smaller than the sum of its proper divisors (40820142580).

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

28360221260 is a wasteful number, since it uses less digits than its factorization.

28360221260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3320946 (or 3320944 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 28360221260 in words is "twenty-eight billion, three hundred sixty million, two hundred twenty-one thousand, two hundred sixty".