12756834 has 48 divisors (see below), whose sum is σ = 29922048. Its totient is φ = 3912576.

The previous prime is 12756833. The next prime is 12756871. The reversal of 12756834 is 43865721.

It is not an unprimeable number, because it can be changed into a prime (12756833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13939 + ... + 14825.

It is an arithmetic number, because the mean of its divisors is an integer number (623376).

Almost surely, 2^12756834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12756834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14961024).

12756834 is an abundant number, since it is smaller than the sum of its proper divisors (17165214).

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

12756834 is a wasteful number, since it uses less digits than its factorization.

12756834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959 (or 956 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12756834 is about 3571.6710374837. The cubic root of 12756834 is about 233.6581684325.

The spelling of 12756834 in words is "twelve million, seven hundred fifty-six thousand, eight hundred thirty-four".