138830000 has 50 divisors (see below), whose sum is σ = 336145524. Its totient is φ = 55528000.

The previous prime is 138829987. The next prime is 138830051. The reversal of 138830000 is 38831.

It is a tau number, because it is divible by the number of its divisors (50).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3059 + ... + 16941.

Almost surely, 2^138830000 is an apocalyptic number.

138830000 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 138830000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168072762).

138830000 is an abundant number, since it is smaller than the sum of its proper divisors (197315524).

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

138830000 is an equidigital number, since it uses as much as digits as its factorization.

138830000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13911 (or 13890 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 138830000 is about 11782.6143109244. The cubic root of 138830000 is about 517.7988813907.

Adding to 138830000 its reverse (38831), we get a palindrome (138868831).

The spelling of 138830000 in words is "one hundred thirty-eight million, eight hundred thirty thousand".