12355980 has 192 divisors, whose sum is σ = 44556288. Its totient is φ = 2488320.

The previous prime is 12355979. The next prime is 12355997. The reversal of 12355980 is 8955321.

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 63 ways as a sum of consecutive naturals, for example, 169224 + ... + 169296.

It is an arithmetic number, because the mean of its divisors is an integer number (232064).

Almost surely, 2^12355980 is an apocalyptic number.

12355980 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 12355980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22278144).

12355980 is an abundant number, since it is smaller than the sum of its proper divisors (32200308).

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

12355980 is a wasteful number, since it uses less digits than its factorization.

12355980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 12355980 is about 3515.1073952299. The cubic root of 12355980 is about 231.1846876670.

The spelling of 12355980 in words is "twelve million, three hundred fifty-five thousand, nine hundred eighty".