12344400 has 180 divisors, whose sum is σ = 44774912. Its totient is φ = 3265920.

The previous prime is 12344351. The next prime is 12344411. The reversal of 12344400 is 444321.

It is a tau number, because it is divible by the number of its divisors (180).

It is a super-2 number, since 2×12344400² = 304768422720000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 97137 + ... + 97263.

Almost surely, 2^12344400 is an apocalyptic number.

12344400 is a gapful number since it is divisible by the number (10) 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 12344400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22387456).

12344400 is an abundant number, since it is smaller than the sum of its proper divisors (32430512).

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

12344400 is a wasteful number, since it uses less digits than its factorization.

12344400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12344400 is about 3513.4598332698. The cubic root of 12344400 is about 231.1124431492.

Adding to 12344400 its reverse (444321), we get a palindrome (12788721).

The spelling of 12344400 in words is "twelve million, three hundred forty-four thousand, four hundred".