138875030 has 16 divisors (see below), whose sum is σ = 285685920. Its totient is φ = 47614272.

The previous prime is 138875021. The next prime is 138875053. The reversal of 138875030 is 30578831.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 991895 + ... + 992034.

It is an arithmetic number, because the mean of its divisors is an integer number (17855370).

Almost surely, 2^138875030 is an apocalyptic number.

138875030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138875030 is an abundant number, since it is smaller than the sum of its proper divisors (146810890).

138875030 is a wasteful number, since it uses less digits than its factorization.

138875030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983943.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 138875030 is about 11784.5250222485. The cubic root of 138875030 is about 517.8548586367.

The spelling of 138875030 in words is "one hundred thirty-eight million, eight hundred seventy-five thousand, thirty".