9138288 has 40 divisors (see below), whose sum is σ = 24001936. Its totient is φ = 2995200.

The previous prime is 9138281. The next prime is 9138289. The reversal of 9138288 is 8828319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9138281) 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, 1368 + ... + 4488.

Almost surely, 2^9138288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9138288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12000968).

9138288 is an abundant number, since it is smaller than the sum of its proper divisors (14863648).

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

9138288 is a wasteful number, since it uses less digits than its factorization.

9138288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3193 (or 3187 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 9138288 is about 3022.9601386720. The cubic root of 9138288 is about 209.0683445204.

The spelling of 9138288 in words is "nine million, one hundred thirty-eight thousand, two hundred eighty-eight".