11709320 has 128 divisors (see below), whose sum is σ = 33177600. Its totient is φ = 3628800.

The previous prime is 11709319. The next prime is 11709361. The reversal of 11709320 is 2390711.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 164885 + ... + 164955.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

Almost surely, 2^11709320 is an apocalyptic number.

11709320 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 11709320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16588800).

11709320 is an abundant number, since it is smaller than the sum of its proper divisors (21468280).

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

11709320 is a wasteful number, since it uses less digits than its factorization.

11709320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 11709320 is about 3421.8883675538. Note that the first 3 decimals coincide. The cubic root of 11709320 is about 227.0791317200.

The spelling of 11709320 in words is "eleven million, seven hundred nine thousand, three hundred twenty".