12910840 has 16 divisors (see below), whose sum is σ = 29049480. Its totient is φ = 5164320.

The previous prime is 12910819. The next prime is 12910867. The reversal of 12910840 is 4801921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161346 + ... + 161425.

Almost surely, 2^12910840 is an apocalyptic number.

12910840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12910840 is an abundant number, since it is smaller than the sum of its proper divisors (16138640).

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

12910840 is a wasteful number, since it uses less digits than its factorization.

12910840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322782 (or 322778 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 12910840 is about 3593.1657351144. The cubic root of 12910840 is about 234.5946838591.

The spelling of 12910840 in words is "twelve million, nine hundred ten thousand, eight hundred forty".