12443520 has 64 divisors (see below), whose sum is σ = 39669840. Its totient is φ = 3317760.

The previous prime is 12443491. The next prime is 12443521. The reversal of 12443520 is 2534421.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×12443520³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12443521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1321 + ... + 5160.

Almost surely, 2^12443520 is an apocalyptic number.

12443520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12443520 is an abundant number, since it is smaller than the sum of its proper divisors (27226320).

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

12443520 is an equidigital number, since it uses as much as digits as its factorization.

12443520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6503 (or 6491 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12443520 is about 3527.5373846353. The cubic root of 12443520 is about 231.7293713143.

Adding to 12443520 its reverse (2534421), we get a palindrome (14977941).

Subtracting from 12443520 its reverse (2534421), we obtain a palindrome (9909099).

The spelling of 12443520 in words is "twelve million, four hundred forty-three thousand, five hundred twenty".