12913500 has 48 divisors (see below), whose sum is σ = 37608480. Its totient is φ = 3443200.

The previous prime is 12913471. The next prime is 12913501. The reversal of 12913500 is 531921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12913501) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2805 + ... + 5804.

It is an arithmetic number, because the mean of its divisors is an integer number (783510).

Almost surely, 2^12913500 is an apocalyptic number.

12913500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12913500 is an abundant number, since it is smaller than the sum of its proper divisors (24694980).

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

12913500 is a wasteful number, since it uses less digits than its factorization.

12913500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8631 (or 8619 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 12913500 is about 3593.5358631855. The cubic root of 12913500 is about 234.6107938103.

The spelling of 12913500 in words is "twelve million, nine hundred thirteen thousand, five hundred".