28516884890 has 32 divisors (see below), whose sum is σ = 55510237440. Its totient is φ = 10485244224.

The previous prime is 28516884883. The next prime is 28516884919. The reversal of 28516884890 is 9848861582.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 427844 + ... + 489983.

It is an arithmetic number, because the mean of its divisors is an integer number (1734694920).

Almost surely, 2^28516884890 is an apocalyptic number.

28516884890 is a deficient number, since it is larger than the sum of its proper divisors (26993352550).

28516884890 is a wasteful number, since it uses less digits than its factorization.

28516884890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918086.

The product of its (nonzero) digits is 8847360, while the sum is 59.

The spelling of 28516884890 in words is "twenty-eight billion, five hundred sixteen million, eight hundred eighty-four thousand, eight hundred ninety".