138301530 has 32 divisors (see below), whose sum is σ = 346356864. Its totient is φ = 35276736.

The previous prime is 138301529. The next prime is 138301543. The reversal of 138301530 is 35103831.

It is a self number, because there is not a number n which added to its sum of digits gives 138301530.

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, 99529 + ... + 100908.

It is an arithmetic number, because the mean of its divisors is an integer number (10823652).

Almost surely, 2^138301530 is an apocalyptic number.

138301530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138301530 is an abundant number, since it is smaller than the sum of its proper divisors (208055334).

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

138301530 is a wasteful number, since it uses less digits than its factorization.

138301530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200470.

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

The square root of 138301530 is about 11760.1670906497. The cubic root of 138301530 is about 517.1410285612.

It can be divided in two parts, 138301 and 530, that added together give a palindrome (138831).

The spelling of 138301530 in words is "one hundred thirty-eight million, three hundred one thousand, five hundred thirty".