7315228 has 24 divisors (see below), whose sum is σ = 13623120. Its totient is φ = 3427200.

The previous prime is 7315223. The next prime is 7315229. The reversal of 7315228 is 8225137.

It is a junction number, because it is equal to n+sod(n) for n = 7315196 and 7315205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7315223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7200 + ... + 8152.

It is an arithmetic number, because the mean of its divisors is an integer number (567630).

Almost surely, 2^7315228 is an apocalyptic number.

It is an amenable number.

7315228 is a deficient number, since it is larger than the sum of its proper divisors (6307892).

7315228 is a wasteful number, since it uses less digits than its factorization.

7315228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077 (or 1075 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 7315228 is about 2704.6678169417. The cubic root of 7315228 is about 194.1225356878.

Subtracting 7315228 from its reverse (8225137), we obtain a palindrome (909909).

The spelling of 7315228 in words is "seven million, three hundred fifteen thousand, two hundred twenty-eight".