12940980 has 96 divisors (see below), whose sum is σ = 39965184. Its totient is φ = 3108864.

The previous prime is 12940969. The next prime is 12940987. The reversal of 12940980 is 8904921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12940987) by changing a digit.

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, 36484 + ... + 36836.

It is an arithmetic number, because the mean of its divisors is an integer number (416304).

Almost surely, 2^12940980 is an apocalyptic number.

12940980 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 12940980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19982592).

12940980 is an abundant number, since it is smaller than the sum of its proper divisors (27024204).

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

12940980 is a wasteful number, since it uses less digits than its factorization.

12940980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 12940980 is about 3597.3573633989. The cubic root of 12940980 is about 234.7770935962. Note that the first 3 decimals are identical.

The spelling of 12940980 in words is "twelve million, nine hundred forty thousand, nine hundred eighty".