12891734 has 8 divisors (see below), whose sum is σ = 19411920. Its totient is φ = 6421096.

The previous prime is 12891731. The next prime is 12891737. The reversal of 12891734 is 43719821.

12891734 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12891731) and next prime (12891737).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12891694 and 12891703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12891731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11729 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (2426490).

Almost surely, 2^12891734 is an apocalyptic number.

12891734 is a deficient number, since it is larger than the sum of its proper divisors (6520186).

12891734 is a wasteful number, since it uses less digits than its factorization.

12891734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24774.

The product of its digits is 12096, while the sum is 35.

The square root of 12891734 is about 3590.5060924611. The cubic root of 12891734 is about 234.4789057271.

The spelling of 12891734 in words is "twelve million, eight hundred ninety-one thousand, seven hundred thirty-four".