7224205 has 8 divisors (see below), whose sum is σ = 8686872. Its totient is φ = 5767488.

The previous prime is 7224197. The next prime is 7224211. The reversal of 7224205 is 5024227.

It can be written as a sum of positive squares in 4 ways, for example, as 328329 + 6895876 = 573^2 + 2626^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 7224205 - 2³ = 7224197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1887 + ... + 4243.

It is an arithmetic number, because the mean of its divisors is an integer number (1085859).

Almost surely, 2^7224205 is an apocalyptic number.

It is an amenable number.

7224205 is a deficient number, since it is larger than the sum of its proper divisors (1462667).

7224205 is a wasteful number, since it uses less digits than its factorization.

7224205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2975.

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 7224205 is about 2687.7881240901. The cubic root of 7224205 is about 193.3140207291.

Adding to 7224205 its sum of digits (22), we get a palindrome (7224227).

The spelling of 7224205 in words is "seven million, two hundred twenty-four thousand, two hundred five".