7222784 has 20 divisors (see below), whose sum is σ = 14432484. Its totient is φ = 3611136.

The previous prime is 7222781. The next prime is 7222799. The reversal of 7222784 is 4872227.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 7222784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7222781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6542 + ... + 7565.

Almost surely, 2^7222784 is an apocalyptic number.

It is an amenable number.

7222784 is a deficient number, since it is larger than the sum of its proper divisors (7209700).

7222784 is an equidigital number, since it uses as much as digits as its factorization.

7222784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14125 (or 14109 counting only the distinct ones).

The product of its digits is 12544, while the sum is 32.

The square root of 7222784 is about 2687.5237673368. The cubic root of 7222784 is about 193.3013449520.

The spelling of 7222784 in words is "seven million, two hundred twenty-two thousand, seven hundred eighty-four".