11989320 has 96 divisors (see below), whose sum is σ = 41860800. Its totient is φ = 2739072.

The previous prime is 11989319. The next prime is 11989321. The reversal of 11989320 is 2398911.

11989320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11989319) and next prime (11989321).

It is not an unprimeable number, because it can be changed into a prime (11989321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4861 + ... + 6899.

It is an arithmetic number, because the mean of its divisors is an integer number (436050).

Almost surely, 2^11989320 is an apocalyptic number.

11989320 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 11989320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20930400).

11989320 is an abundant number, since it is smaller than the sum of its proper divisors (29871480).

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

11989320 is a wasteful number, since it uses less digits than its factorization.

11989320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2056 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 11989320 is about 3462.5597467769. The cubic root of 11989320 is about 228.8749086395.

The spelling of 11989320 in words is "eleven million, nine hundred eighty-nine thousand, three hundred twenty".