138289234 has 8 divisors (see below), whose sum is σ = 207559548. Its totient is φ = 69102720.

The previous prime is 138289231. The next prime is 138289241. The reversal of 138289234 is 432982831.

It can be written as a sum of positive squares in 2 ways, for example, as 117614025 + 20675209 = 10845^2 + 4547^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (138289231) 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, 16647 + ... + 23530.

Almost surely, 2^138289234 is an apocalyptic number.

138289234 is a deficient number, since it is larger than the sum of its proper divisors (69270314).

138289234 is a wasteful number, since it uses less digits than its factorization.

138289234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41900.

The product of its digits is 82944, while the sum is 40.

The square root of 138289234 is about 11759.6442973417. The cubic root of 138289234 is about 517.1257022556.

The spelling of 138289234 in words is "one hundred thirty-eight million, two hundred eighty-nine thousand, two hundred thirty-four".