11138838 has 16 divisors (see below), whose sum is σ = 22310400. Its totient is φ = 3707496.

The previous prime is 11138837. The next prime is 11138843. The reversal of 11138838 is 83883111.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11138799 and 11138808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11138833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7263 + ... + 8661.

It is an arithmetic number, because the mean of its divisors is an integer number (1394400).

Almost surely, 2^11138838 is an apocalyptic number.

11138838 is an abundant number, since it is smaller than the sum of its proper divisors (11171562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11138838 is a wasteful number, since it uses less digits than its factorization.

11138838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731.

The product of its digits is 4608, while the sum is 33.

The square root of 11138838 is about 3337.4897752652. The cubic root of 11138838 is about 223.3297754439.

The spelling of 11138838 in words is "eleven million, one hundred thirty-eight thousand, eight hundred thirty-eight".