138270670 has 8 divisors (see below), whose sum is σ = 248887224. Its totient is φ = 55308264.

The previous prime is 138270607. The next prime is 138270679. The reversal of 138270670 is 76072831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138270679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6913524 + ... + 6913543.

It is an arithmetic number, because the mean of its divisors is an integer number (31110903).

Almost surely, 2^138270670 is an apocalyptic number.

138270670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138270670 is a deficient number, since it is larger than the sum of its proper divisors (110616554).

138270670 is a wasteful number, since it uses less digits than its factorization.

138270670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13827074.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 138270670 is about 11758.8549612622. The cubic root of 138270670 is about 517.1025615023.

The spelling of 138270670 in words is "one hundred thirty-eight million, two hundred seventy thousand, six hundred seventy".