12440560 has 80 divisors (see below), whose sum is σ = 32176512. Its totient is φ = 4435200.

The previous prime is 12440557. The next prime is 12440567. The reversal of 12440560 is 6504421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12440560² = 309535066227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12440567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58855 + ... + 59065.

Almost surely, 2^12440560 is an apocalyptic number.

12440560 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 12440560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16088256).

12440560 is an abundant number, since it is smaller than the sum of its proper divisors (19735952).

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

12440560 is a wasteful number, since it uses less digits than its factorization.

12440560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12440560 is about 3527.1178035331. The cubic root of 12440560 is about 231.7109956635.

Adding to 12440560 its reverse (6504421), we get a palindrome (18944981).

The spelling of 12440560 in words is "twelve million, four hundred forty thousand, five hundred sixty".