11820255 has 24 divisors (see below), whose sum is σ = 19607952. Its totient is φ = 6080256.

The previous prime is 11820247. The next prime is 11820257. The reversal of 11820255 is 55202811.

It is not a de Polignac number, because 11820255 - 2³ = 11820247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11820257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12147 + ... + 13083.

It is an arithmetic number, because the mean of its divisors is an integer number (816998).

Almost surely, 2^11820255 is an apocalyptic number.

11820255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11820255 is a deficient number, since it is larger than the sum of its proper divisors (7787697).

11820255 is an equidigital number, since it uses as much as digits as its factorization.

11820255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1003 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 11820255 is about 3438.0597726043. The cubic root of 11820255 is about 227.7940006072.

The spelling of 11820255 in words is "eleven million, eight hundred twenty thousand, two hundred fifty-five".