12443130 has 48 divisors (see below), whose sum is σ = 36975744. Its totient is φ = 2844000.

The previous prime is 12443129. The next prime is 12443147. The reversal of 12443130 is 3134421.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9246 + ... + 10505.

It is an arithmetic number, because the mean of its divisors is an integer number (770328).

Almost surely, 2^12443130 is an apocalyptic number.

12443130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12443130 is an abundant number, since it is smaller than the sum of its proper divisors (24532614).

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

12443130 is a wasteful number, since it uses less digits than its factorization.

12443130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19771 (or 19768 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 12443130 is about 3527.4821048448. The cubic root of 12443130 is about 231.7269503648.

Adding to 12443130 its reverse (3134421), we get a palindrome (15577551).

The spelling of 12443130 in words is "twelve million, four hundred forty-three thousand, one hundred thirty".