138331500 has 48 divisors (see below), whose sum is σ = 402825696. Its totient is φ = 36888000.

The previous prime is 138331447. The next prime is 138331511. The reversal of 138331500 is 5133831.

138331500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 44611 + ... + 47610.

It is an arithmetic number, because the mean of its divisors is an integer number (8392202).

Almost surely, 2^138331500 is an apocalyptic number.

138331500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138331500 is an abundant number, since it is smaller than the sum of its proper divisors (264494196).

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

138331500 is a wasteful number, since it uses less digits than its factorization.

138331500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92243 (or 92231 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 138331500 is about 11761.4412382157. The cubic root of 138331500 is about 517.1783807564.

It can be divided in two parts, 138331 and 500, that added together give a palindrome (138831).

The spelling of 138331500 in words is "one hundred thirty-eight million, three hundred thirty-one thousand, five hundred".