11963980 has 48 divisors (see below), whose sum is σ = 29042496. Its totient is φ = 4055040.

The previous prime is 11963969. The next prime is 11963993. The reversal of 11963980 is 8936911.

11963980 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13140 + ... + 14020.

It is an arithmetic number, because the mean of its divisors is an integer number (605052).

Almost surely, 2^11963980 is an apocalyptic number.

11963980 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 11963980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14521248).

11963980 is an abundant number, since it is smaller than the sum of its proper divisors (17078516).

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

11963980 is a wasteful number, since it uses less digits than its factorization.

11963980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 11963980 is about 3458.8986686516. The cubic root of 11963980 is about 228.7135488914.

The spelling of 11963980 in words is "eleven million, nine hundred sixty-three thousand, nine hundred eighty".