12320547 has 16 divisors (see below), whose sum is σ = 17098752. Its totient is φ = 7882560.

The previous prime is 12320507. The next prime is 12320549. The reversal of 12320547 is 74502321.

It is not a de Polignac number, because 12320547 - 2¹¹ = 12318499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12320549) 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 15 ways as a sum of consecutive naturals, for example, 12258 + ... + 13224.

It is an arithmetic number, because the mean of its divisors is an integer number (1068672).

Almost surely, 2^12320547 is an apocalyptic number.

12320547 is a deficient number, since it is larger than the sum of its proper divisors (4778205).

12320547 is a wasteful number, since it uses less digits than its factorization.

12320547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1138.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 12320547 is about 3510.0636746361. The cubic root of 12320547 is about 230.9634881668.

Adding to 12320547 its reverse (74502321), we get a palindrome (86822868).

The spelling of 12320547 in words is "twelve million, three hundred twenty thousand, five hundred forty-seven".