12661528 has 16 divisors (see below), whose sum is σ = 25898760. Its totient is φ = 5755200.

The previous prime is 12661499. The next prime is 12661589. The reversal of 12661528 is 82516621.

It is a self number, because there is not a number n which added to its sum of digits gives 12661528.

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, 71853 + ... + 72028.

Almost surely, 2^12661528 is an apocalyptic number.

It is an amenable number.

12661528 is an abundant number, since it is smaller than the sum of its proper divisors (13237232).

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

12661528 is a wasteful number, since it uses less digits than its factorization.

12661528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143898 (or 143894 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 12661528 is about 3558.3040904341. The cubic root of 12661528 is about 233.0748284531.

The spelling of 12661528 in words is "twelve million, six hundred sixty-one thousand, five hundred twenty-eight".