12228537 has 16 divisors (see below), whose sum is σ = 17160192. Its totient is φ = 7735680.

The previous prime is 12228529. The next prime is 12228551. The reversal of 12228537 is 73582221.

It is not a de Polignac number, because 12228537 - 2³ = 12228529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12228527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3208 + ... + 5894.

It is an arithmetic number, because the mean of its divisors is an integer number (1072512).

Almost surely, 2^12228537 is an apocalyptic number.

It is an amenable number.

12228537 is a deficient number, since it is larger than the sum of its proper divisors (4931655).

12228537 is a wasteful number, since it uses less digits than its factorization.

12228537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768.

The product of its digits is 6720, while the sum is 30.

The square root of 12228537 is about 3496.9325129319. The cubic root of 12228537 is about 230.3871048857.

The spelling of 12228537 in words is "twelve million, two hundred twenty-eight thousand, five hundred thirty-seven".