12691024 has 10 divisors (see below), whose sum is σ = 24588890. Its totient is φ = 6345504.

The previous prime is 12691001. The next prime is 12691033. The reversal of 12691024 is 42019621.

It can be written as a sum of positive squares in only one way, i.e., 12673600 + 17424 = 3560^2 + 132^2 .

It is a super-2 number, since 2×12691024² = 322124180337152, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12691024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396579 + ... + 396610.

It is an arithmetic number, because the mean of its divisors is an integer number (2458889).

Almost surely, 2^12691024 is an apocalyptic number.

It is an amenable number.

12691024 is a deficient number, since it is larger than the sum of its proper divisors (11897866).

12691024 is an equidigital number, since it uses as much as digits as its factorization.

12691024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793197 (or 793191 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12691024 is about 3562.4463504732. The cubic root of 12691024 is about 233.2556766519.

The spelling of 12691024 in words is "twelve million, six hundred ninety-one thousand, twenty-four".