28216882888 has 8 divisors (see below), whose sum is σ = 52906655430. Its totient is φ = 14108441440.

The previous prime is 28216882871. The next prime is 28216882891. The reversal of 28216882888 is 88828861282.

It can be written as a sum of positive squares in only one way, i.e., 24983595844 + 3233287044 = 158062^2 + 56862^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1763555173 + ... + 1763555188.

Almost surely, 2^28216882888 is an apocalyptic number.

It is an amenable number.

28216882888 is a deficient number, since it is larger than the sum of its proper divisors (24689772542).

28216882888 is a wasteful number, since it uses less digits than its factorization.

28216882888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527110367 (or 3527110363 counting only the distinct ones).

The product of its digits is 12582912, while the sum is 61.

The spelling of 28216882888 in words is "twenty-eight billion, two hundred sixteen million, eight hundred eighty-two thousand, eight hundred eighty-eight".