12504320 has 36 divisors (see below), whose sum is σ = 29954820. Its totient is φ = 5001216.

The previous prime is 12504311. The next prime is 12504353. The reversal of 12504320 is 2340521.

It can be written as a sum of positive squares in 2 ways, for example, as 4393216 + 8111104 = 2096^2 + 2848^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3605 + ... + 6164.

Almost surely, 2^12504320 is an apocalyptic number.

12504320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12504320 is an abundant number, since it is smaller than the sum of its proper divisors (17450500).

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

12504320 is an frugal number, since it uses more digits than its factorization.

12504320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9790 (or 9776 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 12504320 is about 3536.1447934156. The cubic root of 12504320 is about 232.1061741530.

Adding to 12504320 its reverse (2340521), we get a palindrome (14844841).

The spelling of 12504320 in words is "twelve million, five hundred four thousand, three hundred twenty".