138830270 has 16 divisors (see below), whose sum is σ = 250028640. Its totient is φ = 55502304.

The previous prime is 138830261. The next prime is 138830287. The reversal of 138830270 is 72038831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35324 + ... + 39056.

It is an arithmetic number, because the mean of its divisors is an integer number (15626790).

Almost surely, 2^138830270 is an apocalyptic number.

138830270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138830270 is a deficient number, since it is larger than the sum of its proper divisors (111198370).

138830270 is a wasteful number, since it uses less digits than its factorization.

138830270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 138830270 is about 11782.6257684779. The cubic root of 138830270 is about 517.7992170665.

The spelling of 138830270 in words is "one hundred thirty-eight million, eight hundred thirty thousand, two hundred seventy".