11820345 has 8 divisors (see below), whose sum is σ = 18912576. Its totient is φ = 6304176.

The previous prime is 11820329. The next prime is 11820349. The reversal of 11820345 is 54302811.

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

It is not a de Polignac number, because 11820345 - 2⁴ = 11820329 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11820349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 393997 + ... + 394026.

It is an arithmetic number, because the mean of its divisors is an integer number (2364072).

Almost surely, 2^11820345 is an apocalyptic number.

11820345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11820345 is a deficient number, since it is larger than the sum of its proper divisors (7092231).

11820345 is an equidigital number, since it uses as much as digits as its factorization.

11820345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788031.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 11820345 is about 3438.0728613571. The cubic root of 11820345 is about 227.7945787506.

It can be divided in two parts, 118203 and 45, that multiplied together give a palindrome (5319135).

The spelling of 11820345 in words is "eleven million, eight hundred twenty thousand, three hundred forty-five".