12587928 has 16 divisors (see below), whose sum is σ = 31469880. Its totient is φ = 4195968.

The previous prime is 12587917. The next prime is 12587929. The reversal of 12587928 is 82978521.

It is a self number, because there is not a number n which added to its sum of digits gives 12587928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587929) 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, 262225 + ... + 262272.

Almost surely, 2^12587928 is an apocalyptic number.

It is an amenable number.

12587928 is an abundant number, since it is smaller than the sum of its proper divisors (18881952).

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

12587928 is a wasteful number, since it uses less digits than its factorization.

12587928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524506 (or 524502 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 12587928 is about 3547.9470120057. The cubic root of 12587928 is about 232.6223382060.

The spelling of 12587928 in words is "twelve million, five hundred eighty-seven thousand, nine hundred twenty-eight".