138332088 has 96 divisors (see below), whose sum is σ = 392137200. Its totient is φ = 43997184.

The previous prime is 138332071. The next prime is 138332099. The reversal of 138332088 is 880233831.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202195 + ... + 202877.

Almost surely, 2^138332088 is an apocalyptic number.

138332088 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 138332088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196068600).

138332088 is an abundant number, since it is smaller than the sum of its proper divisors (253805112).

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

138332088 is a wasteful number, since it uses less digits than its factorization.

138332088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 814 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 138332088 is about 11761.4662351256. The cubic root of 138332088 is about 517.1791135383.

The spelling of 138332088 in words is "one hundred thirty-eight million, three hundred thirty-two thousand, eighty-eight".