128353864 has 16 divisors (see below), whose sum is σ = 241382700. Its totient is φ = 63985152.

The previous prime is 128353853. The next prime is 128353867. The reversal of 128353864 is 468353821.

It can be written as a sum of positive squares in 2 ways, for example, as 127012900 + 1340964 = 11270^2 + 1158^2 .

It is not an unprimeable number, because it can be changed into a prime (128353867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21109 + ... + 26500.

Almost surely, 2^128353864 is an apocalyptic number.

It is an amenable number.

128353864 is a deficient number, since it is larger than the sum of its proper divisors (113028836).

128353864 is a wasteful number, since it uses less digits than its factorization.

128353864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47952 (or 47948 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 128353864 is about 11329.3364324659. The cubic root of 128353864 is about 504.4324100421.

The spelling of 128353864 in words is "one hundred twenty-eight million, three hundred fifty-three thousand, eight hundred sixty-four".