12440304 has 100 divisors (see below), whose sum is σ = 37359960. Its totient is φ = 3991680.

The previous prime is 12440293. The next prime is 12440317. The reversal of 12440304 is 40304421.

It is a super-2 number, since 2×12440304² = 309522327224832, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 37419 + ... + 37749.

Almost surely, 2^12440304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12440304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18679980).

12440304 is an abundant number, since it is smaller than the sum of its proper divisors (24919656).

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

12440304 is a wasteful number, since it uses less digits than its factorization.

12440304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 12440304 is about 3527.0815130927. The cubic root of 12440304 is about 231.7094062811.

Adding to 12440304 its reverse (40304421), we get a palindrome (52744725).

The spelling of 12440304 in words is "twelve million, four hundred forty thousand, three hundred four".