28782227266 has 16 divisors (see below), whose sum is σ = 46497576384. Its totient is φ = 13283187984.

The previous prime is 28782227239. The next prime is 28782227267. The reversal of 28782227266 is 66272228782.

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, 476611 + ... + 533593.

It is an arithmetic number, because the mean of its divisors is an integer number (2906098524).

Almost surely, 2^28782227266 is an apocalyptic number.

28782227266 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28782227266 is a deficient number, since it is larger than the sum of its proper divisors (17715349118).

28782227266 is a wasteful number, since it uses less digits than its factorization.

28782227266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76425.

The product of its digits is 3612672, while the sum is 52.

The spelling of 28782227266 in words is "twenty-eight billion, seven hundred eighty-two million, two hundred twenty-seven thousand, two hundred sixty-six".