11665320 has 64 divisors (see below), whose sum is σ = 35864640. Its totient is φ = 3033600.

The previous prime is 11665309. The next prime is 11665333. The reversal of 11665320 is 2356611.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3735 + ... + 6105.

It is an arithmetic number, because the mean of its divisors is an integer number (560385).

Almost surely, 2^11665320 is an apocalyptic number.

11665320 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 11665320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17932320).

11665320 is an abundant number, since it is smaller than the sum of its proper divisors (24199320).

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

11665320 is a wasteful number, since it uses less digits than its factorization.

11665320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2422 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 11665320 is about 3415.4531178161. The cubic root of 11665320 is about 226.7943436779.

The spelling of 11665320 in words is "eleven million, six hundred sixty-five thousand, three hundred twenty".