138500076 has 96 divisors (see below), whose sum is σ = 388700928. Its totient is φ = 37820160.

The previous prime is 138500059. The next prime is 138500099. The reversal of 138500076 is 670005831.

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 31 ways as a sum of consecutive naturals, for example, 72850 + ... + 74726.

It is an arithmetic number, because the mean of its divisors is an integer number (4048968).

Almost surely, 2^138500076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138500076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194350464).

138500076 is an abundant number, since it is smaller than the sum of its proper divisors (250200852).

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

138500076 is a wasteful number, since it uses less digits than its factorization.

138500076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951 (or 1949 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 138500076 is about 11768.6055248700. The cubic root of 138500076 is about 517.3883798563.

The spelling of 138500076 in words is "one hundred thirty-eight million, five hundred thousand, seventy-six".