12801656 has 16 divisors (see below), whose sum is σ = 27432240. Its totient is φ = 5486400.

The previous prime is 12801647. The next prime is 12801661. The reversal of 12801656 is 65610821.

It is a happy number.

12801656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 114245 + ... + 114356.

It is an arithmetic number, because the mean of its divisors is an integer number (1714515).

Almost surely, 2^12801656 is an apocalyptic number.

It is an amenable number.

12801656 is an abundant number, since it is smaller than the sum of its proper divisors (14630584).

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

12801656 is a wasteful number, since it uses less digits than its factorization.

12801656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228614 (or 228610 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 12801656 is about 3577.9401895504. The cubic root of 12801656 is about 233.9315064832.

The spelling of 12801656 in words is "twelve million, eight hundred one thousand, six hundred fifty-six".