122638908 has 48 divisors (see below), whose sum is σ = 327849984. Its totient is φ = 34952640.

The previous prime is 122638871. The next prime is 122638909. The reversal of 122638908 is 809836221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122638909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37141 + ... + 40307.

It is an arithmetic number, because the mean of its divisors is an integer number (6830208).

Almost surely, 2^122638908 is an apocalyptic number.

It is an amenable number.

122638908 is an abundant number, since it is smaller than the sum of its proper divisors (205211076).

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

122638908 is a wasteful number, since it uses less digits than its factorization.

122638908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3642 (or 3640 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 122638908 is about 11074.2452564498. The cubic root of 122638908 is about 496.8318453245.

The spelling of 122638908 in words is "one hundred twenty-two million, six hundred thirty-eight thousand, nine hundred eight".