12243000 has 256 divisors, whose sum is σ = 48522240. Its totient is φ = 2496000.

The previous prime is 12242987. The next prime is 12243019. The reversal of 12243000 is 34221.

It is a Cunningham number, because it is equal to 3499²-1.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 63 ways as a sum of consecutive naturals, for example, 230974 + ... + 231026.

It is an arithmetic number, because the mean of its divisors is an integer number (189540).

Almost surely, 2^12243000 is an apocalyptic number.

12243000 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 12243000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24261120).

12243000 is an abundant number, since it is smaller than the sum of its proper divisors (36279240).

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

12243000 is a wasteful number, since it uses less digits than its factorization.

12243000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12243000 is about 3498.9998571020. Note that the first 3 decimals coincide. The cubic root of 12243000 is about 230.4778973196.

Adding to 12243000 its reverse (34221), we get a palindrome (12277221).

It can be divided in two parts, 1224 and 3000, that added together give a palindrome (4224).

The spelling of 12243000 in words is "twelve million, two hundred forty-three thousand".