128122196 has 6 divisors (see below), whose sum is σ = 224213850. Its totient is φ = 64061096.

The previous prime is 128122193. The next prime is 128122201. The reversal of 128122196 is 691221821.

It can be written as a sum of positive squares in only one way, i.e., 128006596 + 115600 = 11314^2 + 340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128122193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16015271 + ... + 16015278.

It is an arithmetic number, because the mean of its divisors is an integer number (37368975).

Almost surely, 2^128122196 is an apocalyptic number.

It is an amenable number.

128122196 is a deficient number, since it is larger than the sum of its proper divisors (96091654).

128122196 is a wasteful number, since it uses less digits than its factorization.

128122196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32030553 (or 32030551 counting only the distinct ones).

The product of its digits is 3456, while the sum is 32.

The square root of 128122196 is about 11319.1075619945. The cubic root of 128122196 is about 504.1287411522.

The spelling of 128122196 in words is "one hundred twenty-eight million, one hundred twenty-two thousand, one hundred ninety-six".