11943680 has 144 divisors (see below), whose sum is σ = 34535424. Its totient is φ = 3870720.

The previous prime is 11943671. The next prime is 11943683. The reversal of 11943680 is 8634911.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11943683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 277739 + ... + 277781.

Almost surely, 2^11943680 is an apocalyptic number.

11943680 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 11943680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17267712).

11943680 is an abundant number, since it is smaller than the sum of its proper divisors (22591744).

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

11943680 is an equidigital number, since it uses as much as digits as its factorization.

11943680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 11943680 is about 3455.9629627645. The cubic root of 11943680 is about 228.5841183431.

The spelling of 11943680 in words is "eleven million, nine hundred forty-three thousand, six hundred eighty".