28562910884 has 6 divisors (see below), whose sum is σ = 49985094054. Its totient is φ = 14281455440.

The previous prime is 28562910853. The next prime is 28562910907. The reversal of 28562910884 is 48801926582.

It can be written as a sum of positive squares in only one way, i.e., 25676857600 + 2886053284 = 160240^2 + 53722^2 .

It is a super-2 number, since 2×28562910884² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570363857 + ... + 3570363864.

It is an arithmetic number, because the mean of its divisors is an integer number (8330849009).

Almost surely, 2^28562910884 is an apocalyptic number.

It is an amenable number.

28562910884 is a deficient number, since it is larger than the sum of its proper divisors (21422183170).

28562910884 is a wasteful number, since it uses less digits than its factorization.

28562910884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7140727725 (or 7140727723 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 28562910884 in words is "twenty-eight billion, five hundred sixty-two million, nine hundred ten thousand, eight hundred eighty-four".