12799538 has 16 divisors (see below), whose sum is σ = 20543544. Its totient is φ = 5959680.

The previous prime is 12799529. The next prime is 12799541. The reversal of 12799538 is 83599721.

It can be written as a sum of positive squares in 4 ways, for example, as 12271009 + 528529 = 3503^2 + 727^2 .

It is an unprimeable number.

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, 1358 + ... + 5238.

Almost surely, 2^12799538 is an apocalyptic number.

12799538 is a deficient number, since it is larger than the sum of its proper divisors (7744006).

12799538 is a wasteful number, since it uses less digits than its factorization.

12799538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997.

The product of its digits is 136080, while the sum is 44.

The square root of 12799538 is about 3577.6441969542. The cubic root of 12799538 is about 233.9186046561.

The spelling of 12799538 in words is "twelve million, seven hundred ninety-nine thousand, five hundred thirty-eight".