12126580 has 24 divisors (see below), whose sum is σ = 26288640. Its totient is φ = 4693920.

The previous prime is 12126571. The next prime is 12126619. The reversal of 12126580 is 8562121.

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 7 ways as a sum of consecutive naturals, for example, 9160 + ... + 10399.

It is an arithmetic number, because the mean of its divisors is an integer number (1095360).

Almost surely, 2^12126580 is an apocalyptic number.

12126580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12126580 is an abundant number, since it is smaller than the sum of its proper divisors (14162060).

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

12126580 is a wasteful number, since it uses less digits than its factorization.

12126580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19599 (or 19597 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 12126580 is about 3482.3239366837. The cubic root of 12126580 is about 229.7450230462.

The spelling of 12126580 in words is "twelve million, one hundred twenty-six thousand, five hundred eighty".