28076868484 has 18 divisors (see below), whose sum is σ = 57156482670. Its totient is φ = 12032943552.

The previous prime is 28076868473. The next prime is 28076868509. The reversal of 28076868484 is 48486867082.

It can be written as a sum of positive squares in only one way, i.e., 26610744384 + 1466124100 = 163128^2 + 38290^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71624469 + ... + 71624860.

Almost surely, 2^28076868484 is an apocalyptic number.

It is an amenable number.

28076868484 is an abundant number, since it is smaller than the sum of its proper divisors (29079614186).

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

28076868484 is a wasteful number, since it uses less digits than its factorization.

28076868484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143249347 (or 143249338 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 61.

The spelling of 28076868484 in words is "twenty-eight billion, seventy-six million, eight hundred sixty-eight thousand, four hundred eighty-four".