12320472 has 16 divisors (see below), whose sum is σ = 30801240. Its totient is φ = 4106816.

The previous prime is 12320471. The next prime is 12320491. The reversal of 12320472 is 27402321.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256653 + ... + 256700.

Almost surely, 2^12320472 is an apocalyptic number.

12320472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12320472 is an abundant number, since it is smaller than the sum of its proper divisors (18480768).

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

12320472 is a wasteful number, since it uses less digits than its factorization.

12320472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513362 (or 513358 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 12320472 is about 3510.0529910530. The cubic root of 12320472 is about 230.9630195107.

Adding to 12320472 its reverse (27402321), we get a palindrome (39722793).

The spelling of 12320472 in words is "twelve million, three hundred twenty thousand, four hundred seventy-two".