12981448 has 8 divisors (see below), whose sum is σ = 24340230. Its totient is φ = 6490720.

The previous prime is 12981439. The next prime is 12981481. The reversal of 12981448 is 84418921.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 996004 = 3462^2 + 998^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811333 + ... + 811348.

Almost surely, 2^12981448 is an apocalyptic number.

It is an amenable number.

12981448 is a deficient number, since it is larger than the sum of its proper divisors (11358782).

12981448 is a wasteful number, since it uses less digits than its factorization.

12981448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622687 (or 1622683 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 12981448 is about 3602.9776574384. The cubic root of 12981448 is about 235.0215643407.

The spelling of 12981448 in words is "twelve million, nine hundred eighty-one thousand, four hundred forty-eight".