12911382 has 48 divisors (see below), whose sum is σ = 31047120. Its totient is φ = 3844800.

The previous prime is 12911363. The next prime is 12911399. The reversal of 12911382 is 28311921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11544 + ... + 12612.

It is an arithmetic number, because the mean of its divisors is an integer number (646815).

Almost surely, 2^12911382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12911382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15523560).

12911382 is an abundant number, since it is smaller than the sum of its proper divisors (18135738).

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

12911382 is a wasteful number, since it uses less digits than its factorization.

12911382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149 (or 1146 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 12911382 is about 3593.2411552803. The cubic root of 12911382 is about 234.5979665926.

It can be divided in two parts, 129 and 11382, that added together give a palindrome (11511).

The spelling of 12911382 in words is "twelve million, nine hundred eleven thousand, three hundred eighty-two".