28216003783 has 4 divisors (see below), whose sum is σ = 30781095048. Its totient is φ = 25650912520.

The previous prime is 28216003771. The next prime is 28216003811. The reversal of 28216003783 is 38730061282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28216003783 - 2³³ = 19626069191 is a prime.

It is a super-2 number, since 2×28216003783² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28216003703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1282545616 + ... + 1282545637.

It is an arithmetic number, because the mean of its divisors is an integer number (7695273762).

Almost surely, 2^28216003783 is an apocalyptic number.

28216003783 is a deficient number, since it is larger than the sum of its proper divisors (2565091265).

28216003783 is a wasteful number, since it uses less digits than its factorization.

28216003783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565091264.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 28216003783 in words is "twenty-eight billion, two hundred sixteen million, three thousand, seven hundred eighty-three".