28831075785 has 24 divisors (see below), whose sum is σ = 49978743360. Its totient is φ = 15375072672.

The previous prime is 28831075781. The next prime is 28831075789. The reversal of 28831075785 is 58757013882.

It is an interprime number because it is at equal distance from previous prime (28831075781) and next prime (28831075789).

It is not a de Polignac number, because 28831075785 - 2² = 28831075781 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28831075781) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555996 + ... + 605634.

It is an arithmetic number, because the mean of its divisors is an integer number (2082447640).

Almost surely, 2^28831075785 is an apocalyptic number.

It is an amenable number.

28831075785 is a deficient number, since it is larger than the sum of its proper divisors (21147667575).

28831075785 is a wasteful number, since it uses less digits than its factorization.

28831075785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62557 (or 62554 counting only the distinct ones).

The product of its (nonzero) digits is 3763200, while the sum is 54.

The spelling of 28831075785 in words is "twenty-eight billion, eight hundred thirty-one million, seventy-five thousand, seven hundred eighty-five".