11147838 has 32 divisors (see below), whose sum is σ = 24216192. Its totient is φ = 3400800.

The previous prime is 11147833. The next prime is 11147839. The reversal of 11147838 is 83874111.

11147838 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 11147799 and 11147808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11147831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9673 + ... + 10763.

It is an arithmetic number, because the mean of its divisors is an integer number (756756).

Almost surely, 2^11147838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11147838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12108096).

11147838 is an abundant number, since it is smaller than the sum of its proper divisors (13068354).

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

11147838 is a wasteful number, since it uses less digits than its factorization.

11147838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240.

The product of its digits is 5376, while the sum is 33.

The square root of 11147838 is about 3338.8378217577. The cubic root of 11147838 is about 223.3899081939.

The spelling of 11147838 in words is "eleven million, one hundred forty-seven thousand, eight hundred thirty-eight".