12917760 has 132 divisors (see below), whose sum is σ = 42790488. Its totient is φ = 3325952.

The previous prime is 12917741. The next prime is 12917761. The reversal of 12917760 is 6771921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12917761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445426 + ... + 445454.

Almost surely, 2^12917760 is an apocalyptic number.

12917760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12917760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21395244).

12917760 is an abundant number, since it is smaller than the sum of its proper divisors (29872728).

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

12917760 is an equidigital number, since it uses as much as digits as its factorization.

12917760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 33.

The square root of 12917760 is about 3594.1285452805. The cubic root of 12917760 is about 234.6365893499.

The spelling of 12917760 in words is "twelve million, nine hundred seventeen thousand, seven hundred sixty".