12704140 has 12 divisors (see below), whose sum is σ = 26678736. Its totient is φ = 5081648.

The previous prime is 12704129. The next prime is 12704161. The reversal of 12704140 is 4140721.

It is a super-2 number, since 2×12704140² = 322790346279200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317584 + ... + 317623.

It is an arithmetic number, because the mean of its divisors is an integer number (2223228).

Almost surely, 2^12704140 is an apocalyptic number.

12704140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12704140 is an abundant number, since it is smaller than the sum of its proper divisors (13974596).

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

12704140 is a wasteful number, since it uses less digits than its factorization.

12704140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635216 (or 635214 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 12704140 is about 3564.2867449183. The cubic root of 12704140 is about 233.3360045046.

Adding to 12704140 its reverse (4140721), we get a palindrome (16844861).

The spelling of 12704140 in words is "twelve million, seven hundred four thousand, one hundred forty".