28050002805 has 48 divisors (see below), whose sum is σ = 52232789952. Its totient is φ = 12799987200.

The previous prime is 28050002791. The next prime is 28050002807. The reversal of 28050002805 is 50820005082.

It is not a de Polignac number, because 28050002805 - 2⁶ = 28050002741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28050002807) by changing a digit.

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 in 47 ways as a sum of consecutive naturals, for example, 423691 + ... + 485400.

It is an arithmetic number, because the mean of its divisors is an integer number (1088183124).

Almost surely, 2^28050002805 is an apocalyptic number.

It is an amenable number.

28050002805 is a deficient number, since it is larger than the sum of its proper divisors (24182787147).

28050002805 is a wasteful number, since it uses less digits than its factorization.

28050002805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909138 (or 909127 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

Adding to 28050002805 its reverse (50820005082), we get a palindrome (78870007887).

The spelling of 28050002805 in words is "twenty-eight billion, fifty million, two thousand, eight hundred five".