12521880 has 96 divisors (see below), whose sum is σ = 46519200. Its totient is φ = 2861568.

The previous prime is 12521863. The next prime is 12521891. The reversal of 12521880 is 8812521.

12521880 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36 + ... + 5004.

It is an arithmetic number, because the mean of its divisors is an integer number (484575).

Almost surely, 2^12521880 is an apocalyptic number.

12521880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12521880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23259600).

12521880 is an abundant number, since it is smaller than the sum of its proper divisors (33997320).

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

12521880 is a wasteful number, since it uses less digits than its factorization.

12521880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993 (or 4986 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12521880 is about 3538.6268523256. The cubic root of 12521880 is about 232.2147733680.

The spelling of 12521880 in words is "twelve million, five hundred twenty-one thousand, eight hundred eighty".