138422262 has 64 divisors (see below), whose sum is σ = 323046144. Its totient is φ = 39075840.

The previous prime is 138422227. The next prime is 138422293. The reversal of 138422262 is 262224831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119478 + ... + 120630.

It is an arithmetic number, because the mean of its divisors is an integer number (5047596).

Almost surely, 2^138422262 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138422262, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161523072).

138422262 is an abundant number, since it is smaller than the sum of its proper divisors (184623882).

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

138422262 is a wasteful number, since it uses less digits than its factorization.

138422262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1293.

The product of its digits is 9216, while the sum is 30.

The square root of 138422262 is about 11765.2990612224. The cubic root of 138422262 is about 517.2914663077.

The spelling of 138422262 in words is "one hundred thirty-eight million, four hundred twenty-two thousand, two hundred sixty-two".