12343980 has 96 divisors (see below), whose sum is σ = 38465280. Its totient is φ = 2932480.

The previous prime is 12343979. The next prime is 12344041. The reversal of 12343980 is 8934321.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38782 + ... + 39098.

It is an arithmetic number, because the mean of its divisors is an integer number (400680).

Almost surely, 2^12343980 is an apocalyptic number.

12343980 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 12343980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19232640).

12343980 is an abundant number, since it is smaller than the sum of its proper divisors (26121300).

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

12343980 is a wasteful number, since it uses less digits than its factorization.

12343980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 12343980 is about 3513.4000626174. The cubic root of 12343980 is about 231.1098220329.

The spelling of 12343980 in words is "twelve million, three hundred forty-three thousand, nine hundred eighty".