138573234 has 16 divisors (see below), whose sum is σ = 307940640. Its totient is φ = 46191060.

The previous prime is 138573233. The next prime is 138573257. The reversal of 138573234 is 432375831.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138573233) 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, 1283032 + ... + 1283139.

It is an arithmetic number, because the mean of its divisors is an integer number (19246290).

Almost surely, 2^138573234 is an apocalyptic number.

138573234 is an abundant number, since it is smaller than the sum of its proper divisors (169367406).

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

138573234 is a wasteful number, since it uses less digits than its factorization.

138573234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566182 (or 2566176 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 138573234 is about 11771.7132992611. The cubic root of 138573234 is about 517.4794614827.

The spelling of 138573234 in words is "one hundred thirty-eight million, five hundred seventy-three thousand, two hundred thirty-four".