It is a happy number.
It is a congruent number.
It is an unprimeable number.
Almost surely, 2138427360 is an apocalyptic number.
138427360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 138427360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170931600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
138427360 is a wasteful number, since it uses less digits than its factorization.
138427360 is an evil number, because the sum of its binary digits is even.
The square root of 138427360 is about 11765.5157133039. The cubic root of 138427360 is about 517.2978167301.
The spelling of 138427360 in words is "one hundred thirty-eight million, four hundred twenty-seven thousand, three hundred sixty".