7223228 has 12 divisors (see below), whose sum is σ = 12659472. Its totient is φ = 3606240.

The previous prime is 7223221. The next prime is 7223239. The reversal of 7223228 is 8223227.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 7⁸ + 2¹⁴ + 2¹⁷ + 3⁵ + 2¹⁸ + 2²⁰ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 7223197 and 7223206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7223221) 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, 4601 + ... + 5967.

It is an arithmetic number, because the mean of its divisors is an integer number (1054956).

Almost surely, 2^7223228 is an apocalyptic number.

It is an amenable number.

7223228 is a deficient number, since it is larger than the sum of its proper divisors (5436244).

7223228 is a wasteful number, since it uses less digits than its factorization.

7223228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692 (or 2690 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 7223228 is about 2687.6063699880. The cubic root of 7223228 is about 193.3053057534.

Subtracting 7223228 from its reverse (8223227), we obtain a palindrome (999999).

The spelling of 7223228 in words is "seven million, two hundred twenty-three thousand, two hundred twenty-eight".