12766520 has 32 divisors (see below), whose sum is σ = 30935520. Its totient is φ = 4713600.

The previous prime is 12766519. The next prime is 12766543. The reversal of 12766520 is 2566721.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11756 + ... + 12795.

It is an arithmetic number, because the mean of its divisors is an integer number (966735).

Almost surely, 2^12766520 is an apocalyptic number.

12766520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12766520 is an abundant number, since it is smaller than the sum of its proper divisors (18169000).

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

12766520 is a wasteful number, since it uses less digits than its factorization.

12766520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24575 (or 24571 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12766520 is about 3573.0267281396. The cubic root of 12766520 is about 233.7172907418.

The spelling of 12766520 in words is "twelve million, seven hundred sixty-six thousand, five hundred twenty".