12327440 has 40 divisors (see below), whose sum is σ = 28831488. Its totient is φ = 4901760.

The previous prime is 12327421. The next prime is 12327451. The reversal of 12327440 is 4472321.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17495 + ... + 18185.

Almost surely, 2^12327440 is an apocalyptic number.

12327440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12327440 is an abundant number, since it is smaller than the sum of its proper divisors (16504048).

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

12327440 is a wasteful number, since it uses less digits than its factorization.

12327440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927 (or 921 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 12327440 is about 3511.0454283589. The cubic root of 12327440 is about 231.0065526648.

Adding to 12327440 its reverse (4472321), we get a palindrome (16799761).

The spelling of 12327440 in words is "twelve million, three hundred twenty-seven thousand, four hundred forty".