7224722 has 8 divisors (see below), whose sum is σ = 10859376. Its totient is φ = 3604932.

The previous prime is 7224709. The next prime is 7224743. The reversal of 7224722 is 2274227.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 7224691 and 7224700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2408 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (1357422).

Almost surely, 2^7224722 is an apocalyptic number.

7224722 is a deficient number, since it is larger than the sum of its proper divisors (3634654).

7224722 is a wasteful number, since it uses less digits than its factorization.

7224722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7432.

The product of its digits is 3136, while the sum is 26.

The square root of 7224722 is about 2687.8842981051. The cubic root of 7224722 is about 193.3186321230.

Adding to 7224722 its reverse (2274227), we get a palindrome (9498949).

The spelling of 7224722 in words is "seven million, two hundred twenty-four thousand, seven hundred twenty-two".