28199893205 has 32 divisors (see below), whose sum is σ = 37144483200. Its totient is φ = 20382566400.

The previous prime is 28199893187. The next prime is 28199893217. The reversal of 28199893205 is 50239899182.

It is not a de Polignac number, because 28199893205 - 2⁸ = 28199892949 is a prime.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7540226 + ... + 7543964.

It is an arithmetic number, because the mean of its divisors is an integer number (1160765100).

Almost surely, 2^28199893205 is an apocalyptic number.

It is an amenable number.

28199893205 is a deficient number, since it is larger than the sum of its proper divisors (8944589995).

28199893205 is a wasteful number, since it uses less digits than its factorization.

28199893205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4565.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 28199893205 in words is "twenty-eight billion, one hundred ninety-nine million, eight hundred ninety-three thousand, two hundred five".