138133336 has 32 divisors (see below), whose sum is σ = 283852800. Its totient is φ = 62497440.

The previous prime is 138133327. The next prime is 138133339. The reversal of 138133336 is 633331831.

It is a junction number, because it is equal to n+sod(n) for n = 138133298 and 138133307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138133339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16105 + ... + 23143.

It is an arithmetic number, because the mean of its divisors is an integer number (8870400).

Almost surely, 2^138133336 is an apocalyptic number.

It is an amenable number.

138133336 is an abundant number, since it is smaller than the sum of its proper divisors (145719464).

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

138133336 is a wasteful number, since it uses less digits than its factorization.

138133336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7279 (or 7275 counting only the distinct ones).

The product of its digits is 11664, while the sum is 31.

The square root of 138133336 is about 11753.0139113336. The cubic root of 138133336 is about 516.9313049186.

The spelling of 138133336 in words is "one hundred thirty-eight million, one hundred thirty-three thousand, three hundred thirty-six".