11665338 has 8 divisors (see below), whose sum is σ = 23330688. Its totient is φ = 3888444.

The previous prime is 11665333. The next prime is 11665363. The reversal of 11665338 is 83356611.

It is a sphenic number, since it is the product of 3 distinct primes.

11665338 is an admirable number.

It is a super-2 number, since 2×11665338² = 272160221308488, which contains 22 as substring.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 11665299 and 11665308.

It is not an unprimeable number, because it can be changed into a prime (11665333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972106 + ... + 972117.

It is an arithmetic number, because the mean of its divisors is an integer number (2916336).

Almost surely, 2^11665338 is an apocalyptic number.

11665338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

11665338 is a wasteful number, since it uses less digits than its factorization.

11665338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944228.

The product of its digits is 12960, while the sum is 33.

The square root of 11665338 is about 3415.4557528974. The cubic root of 11665338 is about 226.7944603283.

Subtracting from 11665338 its product of digits (12960), we obtain a triangular number (11652378 = T₄₈₂₇).

The spelling of 11665338 in words is "eleven million, six hundred sixty-five thousand, three hundred thirty-eight".