28773302889 has 16 divisors (see below), whose sum is σ = 38635504128. Its totient is φ = 19047124992.

The previous prime is 28773302867. The next prime is 28773302917. The reversal of 28773302889 is 98820337782.

It is a happy number.

It is not a de Polignac number, because 28773302889 - 2⁸ = 28773302633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28773302839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185544 + ... + 303270.

It is an arithmetic number, because the mean of its divisors is an integer number (2414719008).

Almost surely, 2^28773302889 is an apocalyptic number.

It is an amenable number.

28773302889 is a deficient number, since it is larger than the sum of its proper divisors (9862201239).

28773302889 is a wasteful number, since it uses less digits than its factorization.

28773302889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118304.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 28773302889 in words is "twenty-eight billion, seven hundred seventy-three million, three hundred two thousand, eight hundred eighty-nine".