28222576869 has 4 divisors (see below), whose sum is σ = 37630102496. Its totient is φ = 18815051244.

The previous prime is 28222576861. The next prime is 28222576909. The reversal of 28222576869 is 96867522282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 28222576869 - 2³ = 28222576861 is a prime.

It is a super-2 number, since 2×28222576869² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222576861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4703762809 + ... + 4703762814.

It is an arithmetic number, because the mean of its divisors is an integer number (9407525624).

Almost surely, 2^28222576869 is an apocalyptic number.

It is an amenable number.

28222576869 is a deficient number, since it is larger than the sum of its proper divisors (9407525627).

28222576869 is an equidigital number, since it uses as much as digits as its factorization.

28222576869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407525626.

The product of its digits is 11612160, while the sum is 57.

The spelling of 28222576869 in words is "twenty-eight billion, two hundred twenty-two million, five hundred seventy-six thousand, eight hundred sixty-nine".