28276281480 has 32 divisors (see below), whose sum is σ = 84828844800. Its totient is φ = 7540341696.

The previous prime is 28276281419. The next prime is 28276281497. The reversal of 28276281480 is 8418267282.

It is a super-3 number, since 3×28276281480³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117817720 + ... + 117817959.

It is an arithmetic number, because the mean of its divisors is an integer number (2650901400).

Almost surely, 2^28276281480 is an apocalyptic number.

28276281480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28276281480 is an abundant number, since it is smaller than the sum of its proper divisors (56552563320).

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

28276281480 is a wasteful number, since it uses less digits than its factorization.

28276281480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235635693 (or 235635689 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The spelling of 28276281480 in words is "twenty-eight billion, two hundred seventy-six million, two hundred eighty-one thousand, four hundred eighty".