138222716 has 12 divisors (see below), whose sum is σ = 256118688. Its totient is φ = 65045952.

The previous prime is 138222703. The next prime is 138222731. The reversal of 138222716 is 617222831.

138222716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1016276 + ... + 1016411.

It is an arithmetic number, because the mean of its divisors is an integer number (21343224).

Almost surely, 2^138222716 is an apocalyptic number.

It is an amenable number.

138222716 is a deficient number, since it is larger than the sum of its proper divisors (117895972).

138222716 is a wasteful number, since it uses less digits than its factorization.

138222716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2032708 (or 2032706 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 138222716 is about 11756.8157253569. The cubic root of 138222716 is about 517.0427753755.

The spelling of 138222716 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, seven hundred sixteen".