28012053889 has 4 divisors (see below), whose sum is σ = 28018065856. Its totient is φ = 28006041924.

The previous prime is 28012053887. The next prime is 28012054051. The reversal of 28012053889 is 98835021082.

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 28012053889 - 2¹ = 28012053887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28012053887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2998989 + ... + 3008314.

It is an arithmetic number, because the mean of its divisors is an integer number (7004516464).

Almost surely, 2^28012053889 is an apocalyptic number.

It is an amenable number.

28012053889 is a deficient number, since it is larger than the sum of its proper divisors (6011967).

28012053889 is an equidigital number, since it uses as much as digits as its factorization.

28012053889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6011966.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 28012053889 in words is "twenty-eight billion, twelve million, fifty-three thousand, eight hundred eighty-nine".