11722320 has 160 divisors (see below), whose sum is σ = 41485440. Its totient is φ = 3079296.

The previous prime is 11722301. The next prime is 11722331. The reversal of 11722320 is 2322711.

11722320 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 a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 11722293 and 11722302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174927 + ... + 174993.

It is an arithmetic number, because the mean of its divisors is an integer number (259284).

Almost surely, 2^11722320 is an apocalyptic number.

11722320 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 11722320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20742720).

11722320 is an abundant number, since it is smaller than the sum of its proper divisors (29763120).

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

11722320 is an frugal number, since it uses more digits than its factorization.

11722320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 11722320 is about 3423.7873765758. The cubic root of 11722320 is about 227.1631370796.

The spelling of 11722320 in words is "eleven million, seven hundred twenty-two thousand, three hundred twenty".