28799005897 has 4 divisors (see below), whose sum is σ = 29078608000. Its totient is φ = 28519403796.

The previous prime is 28799005891. The next prime is 28799005913. The reversal of 28799005897 is 79850099782.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28799005897 - 2¹⁵ = 28798973129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28799005891) 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 3 ways as a sum of consecutive naturals, for example, 139800897 + ... + 139801102.

It is an arithmetic number, because the mean of its divisors is an integer number (7269652000).

Almost surely, 2^28799005897 is an apocalyptic number.

It is an amenable number.

28799005897 is a deficient number, since it is larger than the sum of its proper divisors (279602103).

28799005897 is a wasteful number, since it uses less digits than its factorization.

28799005897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279602102.

The product of its (nonzero) digits is 22861440, while the sum is 64.

The spelling of 28799005897 in words is "twenty-eight billion, seven hundred ninety-nine million, five thousand, eight hundred ninety-seven".