12991352 has 16 divisors (see below), whose sum is σ = 26573400. Its totient is φ = 5905120.

The previous prime is 12991351. The next prime is 12991361. The reversal of 12991352 is 25319921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12991351) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 73727 + ... + 73902.

Almost surely, 2^12991352 is an apocalyptic number.

It is an amenable number.

12991352 is an abundant number, since it is smaller than the sum of its proper divisors (13582048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12991352 is a wasteful number, since it uses less digits than its factorization.

12991352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147646 (or 147642 counting only the distinct ones).

The product of its digits is 4860, while the sum is 32.

The square root of 12991352 is about 3604.3518141269. The cubic root of 12991352 is about 235.0813178668.

The spelling of 12991352 in words is "twelve million, nine hundred ninety-one thousand, three hundred fifty-two".