12231744 has 112 divisors (see below), whose sum is σ = 39014400. Its totient is φ = 3303936.

The previous prime is 12231733. The next prime is 12231757. The reversal of 12231744 is 44713221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×12231744² = 299231122563072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25297 + ... + 25775.

Almost surely, 2^12231744 is an apocalyptic number.

12231744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12231744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19507200).

12231744 is an abundant number, since it is smaller than the sum of its proper divisors (26782656).

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

12231744 is a wasteful number, since it uses less digits than its factorization.

12231744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520 (or 510 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 12231744 is about 3497.3910276090. The cubic root of 12231744 is about 230.4072432136.

Adding to 12231744 its reverse (44713221), we get a palindrome (56944965).

The spelling of 12231744 in words is "twelve million, two hundred thirty-one thousand, seven hundred forty-four".