9137228 has 12 divisors (see below), whose sum is σ = 16930872. Its totient is φ = 4299840.

The previous prime is 9137213. The next prime is 9137239. The reversal of 9137228 is 8227319.

It is a junction number, because it is equal to n+sod(n) for n = 9137194 and 9137203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67118 + ... + 67253.

It is an arithmetic number, because the mean of its divisors is an integer number (1410906).

Almost surely, 2^9137228 is an apocalyptic number.

It is an amenable number.

9137228 is a deficient number, since it is larger than the sum of its proper divisors (7793644).

9137228 is a wasteful number, since it uses less digits than its factorization.

9137228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134392 (or 134390 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 9137228 is about 3022.7848087484. The cubic root of 9137228 is about 209.0602605476.

Subtracting from 9137228 its reverse (8227319), we obtain a palindrome (909909).

The spelling of 9137228 in words is "nine million, one hundred thirty-seven thousand, two hundred twenty-eight".