138351282 has 16 divisors (see below), whose sum is σ = 277237920. Its totient is φ = 46027872.

The previous prime is 138351281. The next prime is 138351313. The reversal of 138351282 is 282153831.

It is not an unprimeable number, because it can be changed into a prime (138351281) by changing a digit.

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, 18907 + ... + 25182.

It is an arithmetic number, because the mean of its divisors is an integer number (17327370).

Almost surely, 2^138351282 is an apocalyptic number.

138351282 is an abundant number, since it is smaller than the sum of its proper divisors (138886638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138351282 is a wasteful number, since it uses less digits than its factorization.

138351282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44617.

The product of its digits is 11520, while the sum is 33.

The square root of 138351282 is about 11762.2821765166. The cubic root of 138351282 is about 517.2030324929.

The spelling of 138351282 in words is "one hundred thirty-eight million, three hundred fifty-one thousand, two hundred eighty-two".