138900036 has 48 divisors (see below), whose sum is σ = 368944128. Its totient is φ = 40260000.

The previous prime is 138900029. The next prime is 138900037. The reversal of 138900036 is 630009831.

It is a junction number, because it is equal to n+sod(n) for n = 138899976 and 138900012.

It is not an unprimeable number, because it can be changed into a prime (138900037) 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 15 ways as a sum of consecutive naturals, for example, 19840 + ... + 25911.

It is an arithmetic number, because the mean of its divisors is an integer number (7686336).

Almost surely, 2^138900036 is an apocalyptic number.

It is an amenable number.

138900036 is an abundant number, since it is smaller than the sum of its proper divisors (230044092).

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

138900036 is a wasteful number, since it uses less digits than its factorization.

138900036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45792 (or 45790 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 138900036 is about 11785.5859421583. The cubic root of 138900036 is about 517.8859386214.

Adding to 138900036 its reverse (630009831), we get a palindrome (768909867).

The spelling of 138900036 in words is "one hundred thirty-eight million, nine hundred thousand, thirty-six".