138228262 has 8 divisors (see below), whose sum is σ = 207408600. Its totient is φ = 69092064.

The previous prime is 138228253. The next prime is 138228281. The reversal of 138228262 is 262822831.

It is a happy number.

138228262 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587 + ... + 16702.

It is an arithmetic number, because the mean of its divisors is an integer number (25926075).

Almost surely, 2^138228262 is an apocalyptic number.

138228262 is a deficient number, since it is larger than the sum of its proper divisors (69180338).

138228262 is a wasteful number, since it uses less digits than its factorization.

138228262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22070.

The product of its digits is 18432, while the sum is 34.

The square root of 138228262 is about 11757.0515861758. The cubic root of 138228262 is about 517.0496904976.

The spelling of 138228262 in words is "one hundred thirty-eight million, two hundred twenty-eight thousand, two hundred sixty-two".