12290506 has 8 divisors (see below), whose sum is σ = 18476640. Its totient is φ = 6131628.

The previous prime is 12290503. The next prime is 12290521. The reversal of 12290506 is 60509221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (12290501) 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 3 ways as a sum of consecutive naturals, for example, 5646 + ... + 7513.

It is an arithmetic number, because the mean of its divisors is an integer number (2309580).

Almost surely, 2^12290506 is an apocalyptic number.

12290506 is a deficient number, since it is larger than the sum of its proper divisors (6186134).

12290506 is a wasteful number, since it uses less digits than its factorization.

12290506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13628.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 12290506 is about 3505.7817958338. The cubic root of 12290506 is about 230.7756171509.

Adding to 12290506 its reverse (60509221), we get a palindrome (72799727).

The spelling of 12290506 in words is "twelve million, two hundred ninety thousand, five hundred six".