11320385 has 16 divisors (see below), whose sum is σ = 14542416. Its totient is φ = 8429568.

The previous prime is 11320369. The next prime is 11320403. The reversal of 11320385 is 58302311.

11320385 = T₂₄₀ + T₂₄₁ + ... + T₄₃₃.

It can be written as a sum of positive squares in 8 ways, for example, as 1635841 + 9684544 = 1279^2 + 3112^2 .

It is a cyclic number.

It is not a de Polignac number, because 11320385 - 2⁴ = 11320369 is a prime.

It is a super-2 number, since 2×11320385² = 256302233096450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11320385.

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 15 ways as a sum of consecutive naturals, for example, 7559 + ... + 8931.

It is an arithmetic number, because the mean of its divisors is an integer number (908901).

Almost surely, 2^11320385 is an apocalyptic number.

It is an amenable number.

11320385 is a deficient number, since it is larger than the sum of its proper divisors (3222031).

11320385 is a wasteful number, since it uses less digits than its factorization.

11320385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 11320385 is about 3364.5779824519. The cubic root of 11320385 is about 224.5365604979.

Adding to 11320385 its reverse (58302311), we get a palindrome (69622696).

The spelling of 11320385 in words is "eleven million, three hundred twenty thousand, three hundred eighty-five".