12581680 has 20 divisors (see below), whose sum is σ = 29252592. Its totient is φ = 5032640.

The previous prime is 12581659. The next prime is 12581689. The reversal of 12581680 is 8618521.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (12581689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78556 + ... + 78715.

Almost surely, 2^12581680 is an apocalyptic number.

12581680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12581680 is an abundant number, since it is smaller than the sum of its proper divisors (16670912).

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

12581680 is a wasteful number, since it uses less digits than its factorization.

12581680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157284 (or 157278 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 12581680 is about 3547.0663935145. The cubic root of 12581680 is about 232.5838445819.

The spelling of 12581680 in words is "twelve million, five hundred eighty-one thousand, six hundred eighty".