7722226 has 4 divisors (see below), whose sum is σ = 11583342. Its totient is φ = 3861112.

The previous prime is 7722217. The next prime is 7722229. The reversal of 7722226 is 6222277.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4206601 + 3515625 = 2051^2 + 1875^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7722194 and 7722203.

It is not an unprimeable number, because it can be changed into a prime (7722229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930555 + ... + 1930558.

Almost surely, 2^7722226 is an apocalyptic number.

7722226 is a deficient number, since it is larger than the sum of its proper divisors (3861116).

7722226 is a wasteful number, since it uses less digits than its factorization.

7722226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861115.

The product of its digits is 4704, while the sum is 28.

The square root of 7722226 is about 2778.8893464836. The cubic root of 7722226 is about 197.6578964847.

The spelling of 7722226 in words is "seven million, seven hundred twenty-two thousand, two hundred twenty-six".