138748270 has 16 divisors (see below), whose sum is σ = 251145360. Its totient is φ = 55188544.

The previous prime is 138748243. The next prime is 138748273. The reversal of 138748270 is 72847831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138748273) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36967 + ... + 40546.

It is an arithmetic number, because the mean of its divisors is an integer number (15696585).

Almost surely, 2^138748270 is an apocalyptic number.

138748270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138748270 is a deficient number, since it is larger than the sum of its proper divisors (112397090).

138748270 is a wasteful number, since it uses less digits than its factorization.

138748270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77699.

The product of its (nonzero) digits is 75264, while the sum is 40.

The square root of 138748270 is about 11779.1455547506. The cubic root of 138748270 is about 517.6972510757.

The spelling of 138748270 in words is "one hundred thirty-eight million, seven hundred forty-eight thousand, two hundred seventy".