12691292 has 6 divisors (see below), whose sum is σ = 22209768. Its totient is φ = 6345644.

The previous prime is 12691291. The next prime is 12691337. The reversal of 12691292 is 29219621.

12691292 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12691292² = 322137785258528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1586408 + ... + 1586415.

It is an arithmetic number, because the mean of its divisors is an integer number (3701628).

Almost surely, 2^12691292 is an apocalyptic number.

It is an amenable number.

12691292 is a deficient number, since it is larger than the sum of its proper divisors (9518476).

12691292 is a wasteful number, since it uses less digits than its factorization.

12691292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3172827 (or 3172825 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 12691292 is about 3562.4839648762. The cubic root of 12691292 is about 233.2573185494.

The spelling of 12691292 in words is "twelve million, six hundred ninety-one thousand, two hundred ninety-two".