138880030 has 8 divisors (see below), whose sum is σ = 249984072. Its totient is φ = 55552008.

The previous prime is 138880019. The next prime is 138880073. The reversal of 138880030 is 30088831.

138880030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 138879974 and 138880001.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6943992 + ... + 6944011.

It is an arithmetic number, because the mean of its divisors is an integer number (31248009).

Almost surely, 2^138880030 is an apocalyptic number.

138880030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138880030 is a deficient number, since it is larger than the sum of its proper divisors (111104042).

138880030 is a wasteful number, since it uses less digits than its factorization.

138880030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13888010.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 138880030 is about 11784.7371629579. The cubic root of 138880030 is about 517.8610734405.

It can be divided in two parts, 1388 and 80030, that added together give a palindrome (81418).

The spelling of 138880030 in words is "one hundred thirty-eight million, eight hundred eighty thousand, thirty".