7722276 has 12 divisors (see below), whose sum is σ = 18018672. Its totient is φ = 2574088.

The previous prime is 7722271. The next prime is 7722277. The reversal of 7722276 is 6722277.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (7722271) 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, 321750 + ... + 321773.

It is an arithmetic number, because the mean of its divisors is an integer number (1501556).

Almost surely, 2^7722276 is an apocalyptic number.

It is an amenable number.

7722276 is an abundant number, since it is smaller than the sum of its proper divisors (10296396).

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

7722276 is a wasteful number, since it uses less digits than its factorization.

7722276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643530 (or 643528 counting only the distinct ones).

The product of its digits is 16464, while the sum is 33.

The square root of 7722276 is about 2778.8983428690. The cubic root of 7722276 is about 197.6583230833.

Subtracting from 7722276 its reverse (6722277), we obtain a palindrome (999999).

The spelling of 7722276 in words is "seven million, seven hundred twenty-two thousand, two hundred seventy-six".