11838555 has 20 divisors (see below), whose sum is σ = 21222432. Its totient is φ = 6313680.

The previous prime is 11838553. The next prime is 11838569. The reversal of 11838555 is 55583811.

11838555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11838555 - 2¹ = 11838553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11838553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14211 + ... + 15020.

Almost surely, 2^11838555 is an apocalyptic number.

11838555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11838555 is a deficient number, since it is larger than the sum of its proper divisors (9383877).

11838555 is an equidigital number, since it uses as much as digits as its factorization.

11838555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29248 (or 29239 counting only the distinct ones).

The product of its digits is 24000, while the sum is 36.

The square root of 11838555 is about 3440.7201281127. The cubic root of 11838555 is about 227.9114961204.

The spelling of 11838555 in words is "eleven million, eight hundred thirty-eight thousand, five hundred fifty-five".