28083730785 has 16 divisors (see below), whose sum is σ = 49018875840. Its totient is φ = 13616354240.

The previous prime is 28083730721. The next prime is 28083730811. The reversal of 28083730785 is 58703738082.

It is not a de Polignac number, because 28083730785 - 2⁶ = 28083730721 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 85102050 + ... + 85102379.

It is an arithmetic number, because the mean of its divisors is an integer number (3063679740).

Almost surely, 2^28083730785 is an apocalyptic number.

It is an amenable number.

28083730785 is a deficient number, since it is larger than the sum of its proper divisors (20935145055).

28083730785 is a wasteful number, since it uses less digits than its factorization.

28083730785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170204448.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 28083730785 in words is "twenty-eight billion, eighty-three million, seven hundred thirty thousand, seven hundred eighty-five".