122198648 has 64 divisors (see below), whose sum is σ = 270950400. Its totient is φ = 50935680.

The previous prime is 122198639. The next prime is 122198689. The reversal of 122198648 is 846891221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254873 + ... + 255351.

It is an arithmetic number, because the mean of its divisors is an integer number (4233600).

Almost surely, 2^122198648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122198648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135475200).

122198648 is an abundant number, since it is smaller than the sum of its proper divisors (148751752).

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

122198648 is a wasteful number, since it uses less digits than its factorization.

122198648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732 (or 728 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 122198648 is about 11054.3497321190. The cubic root of 122198648 is about 496.2366088424.

The spelling of 122198648 in words is "one hundred twenty-two million, one hundred ninety-eight thousand, six hundred forty-eight".