12712170 has 32 divisors (see below), whose sum is σ = 31495680. Its totient is φ = 3280320.

The previous prime is 12712099. The next prime is 12712187. The reversal of 12712170 is 7121721.

It is a happy number.

It is a super-2 number, since 2×12712170² = 323198532217800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5905 + ... + 7764.

It is an arithmetic number, because the mean of its divisors is an integer number (984240).

Almost surely, 2^12712170 is an apocalyptic number.

12712170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12712170 is an abundant number, since it is smaller than the sum of its proper divisors (18783510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12712170 is a wasteful number, since it uses less digits than its factorization.

12712170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13710.

The product of its (nonzero) digits is 196, while the sum is 21.

The square root of 12712170 is about 3565.4130195533. The cubic root of 12712170 is about 233.3851562898.

Adding to 12712170 its reverse (7121721), we get a palindrome (19833891).

The spelling of 12712170 in words is "twelve million, seven hundred twelve thousand, one hundred seventy".