12390575 has 12 divisors (see below), whose sum is σ = 15508680. Its totient is φ = 9819360.

The previous prime is 12390571. The next prime is 12390593. The reversal of 12390575 is 57509321.

It is not a de Polignac number, because 12390575 - 2² = 12390571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 452 + ... + 4998.

It is an arithmetic number, because the mean of its divisors is an integer number (1292390).

Almost surely, 2^12390575 is an apocalyptic number.

12390575 is a deficient number, since it is larger than the sum of its proper divisors (3118105).

12390575 is a wasteful number, since it uses less digits than its factorization.

12390575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4666 (or 4661 counting only the distinct ones).

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 12390575 is about 3520.0248578668. The cubic root of 12390575 is about 231.4002481106.

Adding to 12390575 its reverse (57509321), we get a palindrome (69899896).

The spelling of 12390575 in words is "twelve million, three hundred ninety thousand, five hundred seventy-five".