12691434 has 32 divisors (see below), whose sum is σ = 29116800. Its totient is φ = 3612672.

The previous prime is 12691417. The next prime is 12691451. The reversal of 12691434 is 43419621.

It is an interprime number because it is at equal distance from previous prime (12691417) and next prime (12691451).

It is a super-2 number, since 2×12691434² = 322144993952712, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18522 + ... + 19194.

It is an arithmetic number, because the mean of its divisors is an integer number (909900).

Almost surely, 2^12691434 is an apocalyptic number.

12691434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12691434 is an abundant number, since it is smaller than the sum of its proper divisors (16425366).

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

12691434 is a wasteful number, since it uses less digits than its factorization.

12691434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134.

The product of its digits is 5184, while the sum is 30.

The square root of 12691434 is about 3562.5038947347. The cubic root of 12691434 is about 233.2581885007.

The spelling of 12691434 in words is "twelve million, six hundred ninety-one thousand, four hundred thirty-four".