12540928 has 44 divisors (see below), whose sum is σ = 25824952. Its totient is φ = 6082560.

The previous prime is 12540881. The next prime is 12540937. The reversal of 12540928 is 82904521.

It is a self number, because there is not a number n which added to its sum of digits gives 12540928.

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 3 ways as a sum of consecutive naturals, for example, 37723 + ... + 38053.

Almost surely, 2^12540928 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 12540928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12912476).

12540928 is an abundant number, since it is smaller than the sum of its proper divisors (13284024).

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

12540928 is an equidigital number, since it uses as much as digits as its factorization.

12540928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 370 counting only the distinct ones).

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

The square root of 12540928 is about 3541.3172690399. The cubic root of 12540928 is about 232.3324603304.

The spelling of 12540928 in words is "twelve million, five hundred forty thousand, nine hundred twenty-eight".