12072170 has 32 divisors (see below), whose sum is σ = 23927616. Its totient is φ = 4385040.

The previous prime is 12072169. The next prime is 12072173. The reversal of 12072170 is 7127021.

12072170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12072173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12857 + ... + 13763.

It is an arithmetic number, because the mean of its divisors is an integer number (747738).

Almost surely, 2^12072170 is an apocalyptic number.

12072170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12072170 is a deficient number, since it is larger than the sum of its proper divisors (11855446).

12072170 is an equidigital number, since it uses as much as digits as its factorization.

12072170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 925 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 20.

The square root of 12072170 is about 3474.5028421344. The cubic root of 12072170 is about 229.4008982877.

Adding to 12072170 its reverse (7127021), we get a palindrome (19199191).

The spelling of 12072170 in words is "twelve million, seventy-two thousand, one hundred seventy".