12237128 has 16 divisors (see below), whose sum is σ = 23008380. Its totient is φ = 6101568.

The previous prime is 12237091. The next prime is 12237133. The reversal of 12237128 is 82173221.

12237128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10099684 + 2137444 = 3178^2 + 1462^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12237097 and 12237106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1250 + ... + 5102.

Almost surely, 2^12237128 is an apocalyptic number.

It is an amenable number.

12237128 is a deficient number, since it is larger than the sum of its proper divisors (10771252).

12237128 is a wasteful number, since it uses less digits than its factorization.

12237128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256 (or 4252 counting only the distinct ones).

The product of its digits is 1344, while the sum is 26.

The square root of 12237128 is about 3498.1606595467. The cubic root of 12237128 is about 230.4410440800.

The spelling of 12237128 in words is "twelve million, two hundred thirty-seven thousand, one hundred twenty-eight".