108640128 has 32 divisors (see below), whose sum is σ = 288576360. Its totient is φ = 36213248.

The previous prime is 108640127. The next prime is 108640139. The reversal of 108640128 is 821046801.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 108640095 and 108640104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108640127) 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, 141075 + ... + 141842.

Almost surely, 2^108640128 is an apocalyptic number.

It is an amenable number.

108640128 is an abundant number, since it is smaller than the sum of its proper divisors (179936232).

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

108640128 is an equidigital number, since it uses as much as digits as its factorization.

108640128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282934 (or 282922 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 108640128 is about 10423.0575168709. The cubic root of 108640128 is about 477.1593330478.

Adding to 108640128 its reverse (821046801), we get a palindrome (929686929).

It can be divided in two parts, 1086 and 40128, that added together give a palindrome (41214).

The spelling of 108640128 in words is "one hundred eight million, six hundred forty thousand, one hundred twenty-eight".