28303323785 has 32 divisors (see below), whose sum is σ = 38682738432. Its totient is φ = 19678996480.

The previous prime is 28303323751. The next prime is 28303323787. The reversal of 28303323785 is 58732330382.

It is not a de Polignac number, because 28303323785 - 2⁶ = 28303323721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28303323787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3052877 + ... + 3062133.

It is an arithmetic number, because the mean of its divisors is an integer number (1208835576).

Almost surely, 2^28303323785 is an apocalyptic number.

It is an amenable number.

28303323785 is a deficient number, since it is larger than the sum of its proper divisors (10379414647).

28303323785 is a wasteful number, since it uses less digits than its factorization.

28303323785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11713.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 28303323785 in words is "twenty-eight billion, three hundred three million, three hundred twenty-three thousand, seven hundred eighty-five".