12840296 has 32 divisors (see below), whose sum is σ = 27699840. Its totient is φ = 5466048.

The previous prime is 12840283. The next prime is 12840299. The reversal of 12840296 is 69204821.

It is not an unprimeable number, because it can be changed into a prime (12840299) 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, 8666 + ... + 10038.

It is an arithmetic number, because the mean of its divisors is an integer number (865620).

Almost surely, 2^12840296 is an apocalyptic number.

It is an amenable number.

12840296 is an abundant number, since it is smaller than the sum of its proper divisors (14859544).

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

12840296 is a wasteful number, since it uses less digits than its factorization.

12840296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1549 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 12840296 is about 3583.3358759681. The cubic root of 12840296 is about 234.1666332043.

The spelling of 12840296 in words is "twelve million, eight hundred forty thousand, two hundred ninety-six".