12017530 has 16 divisors (see below), whose sum is σ = 24721920. Its totient is φ = 4120272.

The previous prime is 12017497. The next prime is 12017539. The reversal of 12017530 is 3571021.

It is a junction number, because it is equal to n+sod(n) for n = 12017498 and 12017507.

It is not an unprimeable number, because it can be changed into a prime (12017539) 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 7 ways as a sum of consecutive naturals, for example, 85770 + ... + 85909.

It is an arithmetic number, because the mean of its divisors is an integer number (1545120).

Almost surely, 2^12017530 is an apocalyptic number.

12017530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12017530 is an abundant number, since it is smaller than the sum of its proper divisors (12704390).

12017530 is a wasteful number, since it uses less digits than its factorization.

12017530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171693.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 12017530 is about 3466.6309293030. The cubic root of 12017530 is about 229.0542767171.

Adding to 12017530 its reverse (3571021), we get a palindrome (15588551).

The spelling of 12017530 in words is "twelve million, seventeen thousand, five hundred thirty".