12297128 has 8 divisors (see below), whose sum is σ = 23057130. Its totient is φ = 6148560.

The previous prime is 12297083. The next prime is 12297143. The reversal of 12297128 is 82179221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12264004 + 33124 = 3502^2 + 182^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 12297094 and 12297103.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768563 + ... + 768578.

Almost surely, 2^12297128 is an apocalyptic number.

It is an amenable number.

12297128 is a deficient number, since it is larger than the sum of its proper divisors (10760002).

12297128 is a wasteful number, since it uses less digits than its factorization.

12297128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1537147 (or 1537143 counting only the distinct ones).

The product of its digits is 4032, while the sum is 32.

The square root of 12297128 is about 3506.7261084949. The cubic root of 12297128 is about 230.8170562302.

The spelling of 12297128 in words is "twelve million, two hundred ninety-seven thousand, one hundred twenty-eight".