138225084 has 12 divisors (see below), whose sum is σ = 322525224. Its totient is φ = 46075024.

The previous prime is 138225071. The next prime is 138225089. The reversal of 138225084 is 480522831.

138225084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138225089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5759367 + ... + 5759390.

It is an arithmetic number, because the mean of its divisors is an integer number (26877102).

Almost surely, 2^138225084 is an apocalyptic number.

It is an amenable number.

138225084 is an abundant number, since it is smaller than the sum of its proper divisors (184300140).

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

138225084 is a wasteful number, since it uses less digits than its factorization.

138225084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11518764 (or 11518762 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 138225084 is about 11756.9164324665. The cubic root of 138225084 is about 517.0457279782.

The spelling of 138225084 in words is "one hundred thirty-eight million, two hundred twenty-five thousand, eighty-four".