128655422 has 64 divisors (see below), whose sum is σ = 256711680. Its totient is φ = 46987776.

The previous prime is 128655389. The next prime is 128655451. The reversal of 128655422 is 224556821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103388 + ... + 104624.

It is an arithmetic number, because the mean of its divisors is an integer number (4011120).

Almost surely, 2^128655422 is an apocalyptic number.

128655422 is a deficient number, since it is larger than the sum of its proper divisors (128056258).

128655422 is a wasteful number, since it uses less digits than its factorization.

128655422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305.

The product of its digits is 38400, while the sum is 35.

The square root of 128655422 is about 11342.6373476366. The cubic root of 128655422 is about 504.8271434015.

The spelling of 128655422 in words is "one hundred twenty-eight million, six hundred fifty-five thousand, four hundred twenty-two".