12218934 has 96 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 3060288.

The previous prime is 12218933. The next prime is 12218939. The reversal of 12218934 is 43981221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12218933) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 87837 + ... + 87975.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^12218934 is an apocalyptic number.

12218934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12218934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16087680).

12218934 is an abundant number, since it is smaller than the sum of its proper divisors (19956426).

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

12218934 is a wasteful number, since it uses less digits than its factorization.

12218934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 187 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 12218934 is about 3495.5591827346. The cubic root of 12218934 is about 230.3267818683.

The spelling of 12218934 in words is "twelve million, two hundred eighteen thousand, nine hundred thirty-four".