11939680 has 24 divisors (see below), whose sum is σ = 28207872. Its totient is φ = 4775808.

The previous prime is 11939659. The next prime is 11939689. The reversal of 11939680 is 8693911.

11939680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37152 + ... + 37471.

It is an arithmetic number, because the mean of its divisors is an integer number (1175328).

Almost surely, 2^11939680 is an apocalyptic number.

11939680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11939680 is an abundant number, since it is smaller than the sum of its proper divisors (16268192).

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

11939680 is an equidigital number, since it uses as much as digits as its factorization.

11939680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74638 (or 74630 counting only the distinct ones).

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

The square root of 11939680 is about 3455.3842043975. The cubic root of 11939680 is about 228.5585974940.

The spelling of 11939680 in words is "eleven million, nine hundred thirty-nine thousand, six hundred eighty".