7872222786 has 16 divisors (see below), whose sum is σ = 16169971584. Its totient is φ = 2553153264.

The previous prime is 7872222781. The next prime is 7872222803. The reversal of 7872222786 is 6872222787.

It is not an unprimeable number, because it can be changed into a prime (7872222781) 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, 17730010 + ... + 17730453.

It is an arithmetic number, because the mean of its divisors is an integer number (1010623224).

Almost surely, 2^7872222786 is an apocalyptic number.

7872222786 is an abundant number, since it is smaller than the sum of its proper divisors (8297748798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7872222786 is a wasteful number, since it uses less digits than its factorization.

7872222786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35460505.

The product of its digits is 2107392, while the sum is 51.

The square root of 7872222786 is about 88725.5475384627. The cubic root of 7872222786 is about 1989.2946993409.

Subtracting from 7872222786 its reverse (6872222787), we obtain a palindrome (999999999).

The spelling of 7872222786 in words is "seven billion, eight hundred seventy-two million, two hundred twenty-two thousand, seven hundred eighty-six".