138450244 has 24 divisors (see below), whose sum is σ = 258134688. Its totient is φ = 64748160.

The previous prime is 138450241. The next prime is 138450253. The reversal of 138450244 is 442054831.

It is not an unprimeable number, because it can be changed into a prime (138450241) 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, 4839 + ... + 17329.

It is an arithmetic number, because the mean of its divisors is an integer number (10755612).

Almost surely, 2^138450244 is an apocalyptic number.

It is an amenable number.

138450244 is a deficient number, since it is larger than the sum of its proper divisors (119684444).

138450244 is a wasteful number, since it uses less digits than its factorization.

138450244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12675 (or 12673 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 138450244 is about 11766.4881761722. The cubic root of 138450244 is about 517.3263207074.

The spelling of 138450244 in words is "one hundred thirty-eight million, four hundred fifty thousand, two hundred forty-four".