12886434 has 48 divisors (see below), whose sum is σ = 31299840. Its totient is φ = 3797280.

The previous prime is 12886381. The next prime is 12886439. The reversal of 12886434 is 43468821.

12886434 is a `hidden beast` number, since 1 + 2 + 8 + 8 + 643 + 4 = 666.

It is not an unprimeable number, because it can be changed into a prime (12886439) 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, 6447 + ... + 8205.

It is an arithmetic number, because the mean of its divisors is an integer number (652080).

Almost surely, 2^12886434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12886434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15649920).

12886434 is an abundant number, since it is smaller than the sum of its proper divisors (18413406).

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

12886434 is a wasteful number, since it uses less digits than its factorization.

12886434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1812 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 12886434 is about 3589.7679590748. The cubic root of 12886434 is about 234.4467686346.

It can be divided in two parts, 12 and 886434, that added together give a triangular number (886446 = T₁₃₃₁).

The spelling of 12886434 in words is "twelve million, eight hundred eighty-six thousand, four hundred thirty-four".