11805530 has 16 divisors (see below), whose sum is σ = 23181984. Its totient is φ = 4292880.

The previous prime is 11805529. The next prime is 11805533. The reversal of 11805530 is 3550811.

It is a junction number, because it is equal to n+sod(n) for n = 11805496 and 11805505.

It is not an unprimeable number, because it can be changed into a prime (11805533) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 53552 + ... + 53771.

It is an arithmetic number, because the mean of its divisors is an integer number (1448874).

Almost surely, 2^11805530 is an apocalyptic number.

11805530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11805530 is a deficient number, since it is larger than the sum of its proper divisors (11376454).

11805530 is a wasteful number, since it uses less digits than its factorization.

11805530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107341.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 11805530 is about 3435.9176357998. The cubic root of 11805530 is about 227.6993703736.

The spelling of 11805530 in words is "eleven million, eight hundred five thousand, five hundred thirty".