28205002287 has 48 divisors (see below), whose sum is σ = 50824680192. Its totient is φ = 14642933760.

The previous prime is 28205002213. The next prime is 28205002303. The reversal of 28205002287 is 78220050282.

It is not a de Polignac number, because 28205002287 - 2¹⁸ = 28204740143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28205002187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1199023 + ... + 1222319.

It is an arithmetic number, because the mean of its divisors is an integer number (1058847504).

Almost surely, 2^28205002287 is an apocalyptic number.

28205002287 is a deficient number, since it is larger than the sum of its proper divisors (22619677905).

28205002287 is a wasteful number, since it uses less digits than its factorization.

28205002287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25068 (or 25065 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The spelling of 28205002287 in words is "twenty-eight billion, two hundred five million, two thousand, two hundred eighty-seven".