12691392 has 168 divisors, whose sum is σ = 41696640. Its totient is φ = 3386880.

The previous prime is 12691391. The next prime is 12691397. The reversal of 12691392 is 29319621.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×12691392² = 322142861795328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12691391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178717 + ... + 178787.

Almost surely, 2^12691392 is an apocalyptic number.

12691392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12691392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20848320).

12691392 is an abundant number, since it is smaller than the sum of its proper divisors (29005248).

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

12691392 is a wasteful number, since it uses less digits than its factorization.

12691392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 102 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 12691392 is about 3562.4979999994. The cubic root of 12691392 is about 233.2579311918.

The spelling of 12691392 in words is "twelve million, six hundred ninety-one thousand, three hundred ninety-two".