12380440 has 32 divisors (see below), whose sum is σ = 29069280. Its totient is φ = 4736512.

The previous prime is 12380413. The next prime is 12380443. The reversal of 12380440 is 4408321.

12380440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380443) 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, 5809 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (908415).

Almost surely, 2^12380440 is an apocalyptic number.

12380440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12380440 is an abundant number, since it is smaller than the sum of its proper divisors (16688840).

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

12380440 is a wasteful number, since it uses less digits than its factorization.

12380440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13491 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 12380440 is about 3518.5849428428. The cubic root of 12380440 is about 231.3371388187.

Adding to 12380440 its reverse (4408321), we get a palindrome (16788761).

The spelling of 12380440 in words is "twelve million, three hundred eighty thousand, four hundred forty".