12261232 has 40 divisors (see below), whose sum is σ = 25511760. Its totient is φ = 5690880.

The previous prime is 12261211. The next prime is 12261253. The reversal of 12261232 is 23216221.

It is an interprime number because it is at equal distance from previous prime (12261211) and next prime (12261253).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 15732 + ... + 16492.

It is an arithmetic number, because the mean of its divisors is an integer number (637794).

Almost surely, 2^12261232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12261232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12755880).

12261232 is an abundant number, since it is smaller than the sum of its proper divisors (13250528).

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

12261232 is a wasteful number, since it uses less digits than its factorization.

12261232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 835 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 12261232 is about 3501.6042037900. The cubic root of 12261232 is about 230.5922480743.

Adding to 12261232 its reverse (23216221), we get a palindrome (35477453).

The spelling of 12261232 in words is "twelve million, two hundred sixty-one thousand, two hundred thirty-two".