138308796 has 42 divisors (see below), whose sum is σ = 362902232. Its totient is φ = 46101960.

The previous prime is 138308791. The next prime is 138308813. The reversal of 138308796 is 697803831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138308791) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 20800 + ... + 26631.

Almost surely, 2^138308796 is an apocalyptic number.

It is an amenable number.

138308796 is an abundant number, since it is smaller than the sum of its proper divisors (224593436).

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

138308796 is an equidigital number, since it uses as much as digits as its factorization.

138308796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47453 (or 47436 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 138308796 is about 11760.4760107744. The cubic root of 138308796 is about 517.1500848141.

The spelling of 138308796 in words is "one hundred thirty-eight million, three hundred eight thousand, seven hundred ninety-six".