28782227269 has 8 divisors (see below), whose sum is σ = 28812371328. Its totient is φ = 28752102720.

The previous prime is 28782227267. The next prime is 28782227291. The reversal of 28782227269 is 96272228782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28782227269 - 2¹ = 28782227267 is a prime.

It is a super-2 number, since 2×28782227269² (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 (28782227267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6634269 + ... + 6638605.

It is an arithmetic number, because the mean of its divisors is an integer number (3601546416).

Almost surely, 2^28782227269 is an apocalyptic number.

It is an amenable number.

28782227269 is a deficient number, since it is larger than the sum of its proper divisors (30144059).

28782227269 is a wasteful number, since it uses less digits than its factorization.

28782227269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9755.

The product of its digits is 5419008, while the sum is 55.

The spelling of 28782227269 in words is "twenty-eight billion, seven hundred eighty-two million, two hundred twenty-seven thousand, two hundred sixty-nine".