12128948 has 24 divisors (see below), whose sum is σ = 23420040. Its totient is φ = 5460480.

The previous prime is 12128947. The next prime is 12128957. The reversal of 12128948 is 84982121.

It can be written as a sum of positive squares in 4 ways, for example, as 487204 + 11641744 = 698^2 + 3412^2 .

It is a super-2 number, since 2×12128948² = 294222759173408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 713 + ... + 4976.

It is an arithmetic number, because the mean of its divisors is an integer number (975835).

Almost surely, 2^12128948 is an apocalyptic number.

It is an amenable number.

12128948 is a deficient number, since it is larger than the sum of its proper divisors (11291092).

12128948 is a wasteful number, since it uses less digits than its factorization.

12128948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5747 (or 5745 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 12128948 is about 3482.6639229188. The cubic root of 12128948 is about 229.7599764463.

The spelling of 12128948 in words is "twelve million, one hundred twenty-eight thousand, nine hundred forty-eight".