138444282 has 32 divisors (see below), whose sum is σ = 308674560. Its totient is φ = 45995040.

The previous prime is 138444259. The next prime is 138444283. The reversal of 138444282 is 282444831.

138444282 is a `hidden beast` number, since 138 + 4 + 442 + 82 = 666.

138444282 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138444283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12807 + ... + 20997.

It is an arithmetic number, because the mean of its divisors is an integer number (9646080).

Almost surely, 2^138444282 is an apocalyptic number.

138444282 is an abundant number, since it is smaller than the sum of its proper divisors (170230278).

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

138444282 is a wasteful number, since it uses less digits than its factorization.

138444282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8515 (or 8509 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 138444282 is about 11766.2348268254. The cubic root of 138444282 is about 517.3188948296.

The spelling of 138444282 in words is "one hundred thirty-eight million, four hundred forty-four thousand, two hundred eighty-two".