138007230 has 128 divisors (see below), whose sum is σ = 362517120. Its totient is φ = 33546240.

The previous prime is 138007213. The next prime is 138007231. The reversal of 138007230 is 32700831.

138007230 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 138007230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138007231) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1890474 + ... + 1890546.

It is an arithmetic number, because the mean of its divisors is an integer number (2832165).

Almost surely, 2^138007230 is an apocalyptic number.

138007230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138007230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181258560).

138007230 is an abundant number, since it is smaller than the sum of its proper divisors (224509890).

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

138007230 is a wasteful number, since it uses less digits than its factorization.

138007230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 138007230 is about 11747.6478496761. The cubic root of 138007230 is about 516.7739497416.

The spelling of 138007230 in words is "one hundred thirty-eight million, seven thousand, two hundred thirty".