7238228 has 6 divisors (see below), whose sum is σ = 12666906. Its totient is φ = 3619112.

The previous prime is 7238207. The next prime is 7238267. The reversal of 7238228 is 8228327.

It can be written as a sum of positive squares in only one way, i.e., 6980164 + 258064 = 2642^2 + 508^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7238194 and 7238203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904775 + ... + 904782.

It is an arithmetic number, because the mean of its divisors is an integer number (2111151).

Almost surely, 2^7238228 is an apocalyptic number.

It is an amenable number.

7238228 is a deficient number, since it is larger than the sum of its proper divisors (5428678).

7238228 is a wasteful number, since it uses less digits than its factorization.

7238228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809561 (or 1809559 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 7238228 is about 2690.3955099576. The cubic root of 7238228 is about 193.4390213524.

Subtracting 7238228 from its reverse (8228327), we obtain a palindrome (990099).

The spelling of 7238228 in words is "seven million, two hundred thirty-eight thousand, two hundred twenty-eight".