28222861783 has 4 divisors (see below), whose sum is σ = 28438303608. Its totient is φ = 28007419960.

The previous prime is 28222861727. The next prime is 28222861811. The reversal of 28222861783 is 38716822282.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28222861783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222861283) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 107720716 + ... + 107720977.

It is an arithmetic number, because the mean of its divisors is an integer number (7109575902).

Almost surely, 2^28222861783 is an apocalyptic number.

28222861783 is a deficient number, since it is larger than the sum of its proper divisors (215441825).

28222861783 is a wasteful number, since it uses less digits than its factorization.

28222861783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215441824.

The product of its digits is 1032192, while the sum is 49.

The spelling of 28222861783 in words is "twenty-eight billion, two hundred twenty-two million, eight hundred sixty-one thousand, seven hundred eighty-three".