12787712 has 56 divisors (see below), whose sum is σ = 29358336. Its totient is φ = 5455872.

The previous prime is 12787693. The next prime is 12787721. The reversal of 12787712 is 21778721.

It is a tau number, because it is divible by the number of its divisors (56).

It is a nude number because it is divisible by every one of its digits.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57233 + ... + 57455.

It is an arithmetic number, because the mean of its divisors is an integer number (524256).

Almost surely, 2^12787712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12787712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14679168).

12787712 is an abundant number, since it is smaller than the sum of its proper divisors (16570624).

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

12787712 is an frugal number, since it uses more digits than its factorization.

12787712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256 (or 232 counting only the distinct ones).

The product of its digits is 10976, while the sum is 35.

The square root of 12787712 is about 3575.9910514429. The cubic root of 12787712 is about 233.8465402366.

The spelling of 12787712 in words is "twelve million, seven hundred eighty-seven thousand, seven hundred twelve".