12170572 has 24 divisors (see below), whose sum is σ = 22816080. Its totient is φ = 5660160.

The previous prime is 12170551. The next prime is 12170573. The reversal of 12170572 is 27507121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12170573) 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 7 ways as a sum of consecutive naturals, for example, 5047 + ... + 7057.

It is an arithmetic number, because the mean of its divisors is an integer number (950670).

Almost surely, 2^12170572 is an apocalyptic number.

It is an amenable number.

12170572 is a deficient number, since it is larger than the sum of its proper divisors (10645508).

12170572 is a wasteful number, since it uses less digits than its factorization.

12170572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121 (or 2119 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 25.

The square root of 12170572 is about 3488.6346899611. The cubic root of 12170572 is about 230.0225056742.

Adding to 12170572 its reverse (27507121), we get a palindrome (39677693).

The spelling of 12170572 in words is "twelve million, one hundred seventy thousand, five hundred seventy-two".