138330108 has 144 divisors (see below), whose sum is σ = 425617920. Its totient is φ = 37003392.

The previous prime is 138330083. The next prime is 138330131. The reversal of 138330108 is 801033831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 799510 + ... + 799682.

It is an arithmetic number, because the mean of its divisors is an integer number (2955680).

Almost surely, 2^138330108 is an apocalyptic number.

138330108 is a gapful number since it is divisible by the number (18) 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 138330108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212808960).

138330108 is an abundant number, since it is smaller than the sum of its proper divisors (287287812).

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

138330108 is a wasteful number, since it uses less digits than its factorization.

138330108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 138330108 is about 11761.3820616456. The cubic root of 138330108 is about 517.1766459991.

Adding to 138330108 its reverse (801033831), we get a palindrome (939363939).

The spelling of 138330108 in words is "one hundred thirty-eight million, three hundred thirty thousand, one hundred eight".