12891752 has 8 divisors (see below), whose sum is σ = 24172050. Its totient is φ = 6445872.

The previous prime is 12891751. The next prime is 12891761. The reversal of 12891752 is 25719821.

It can be written as a sum of positive squares in only one way, i.e., 10719076 + 2172676 = 3274^2 + 1474^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12891751) 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 as a sum of consecutive naturals, namely, 805727 + ... + 805742.

Almost surely, 2^12891752 is an apocalyptic number.

It is an amenable number.

12891752 is a deficient number, since it is larger than the sum of its proper divisors (11280298).

12891752 is a wasteful number, since it uses less digits than its factorization.

12891752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611475 (or 1611471 counting only the distinct ones).

The product of its digits is 10080, while the sum is 35.

The square root of 12891752 is about 3590.5085990706. The cubic root of 12891752 is about 234.4790148569.

The spelling of 12891752 in words is "twelve million, eight hundred ninety-one thousand, seven hundred fifty-two".