138427360 has 96 divisors (see below), whose sum is σ = 341863200. Its totient is φ = 52918272.

The previous prime is 138427349. The next prime is 138427391. The reversal of 138427360 is 63724831.

It is a happy number.

It is a super-3 number, since 3×138427360³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396466 + ... + 396814.

It is an arithmetic number, because the mean of its divisors is an integer number (3561075).

Almost surely, 2^138427360 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).

138427360 is an abundant number, since it is smaller than the sum of its proper divisors (203435840).

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 sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

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".