108720128 has 104 divisors (see below), whose sum is σ = 251627520. Its totient is φ = 46448640.

The previous prime is 108720127. The next prime is 108720169. The reversal of 108720128 is 821027801.

It is a self number, because there is not a number n which added to its sum of digits gives 108720128.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108720127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 856001 + ... + 856127.

Almost surely, 2^108720128 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 108720128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125813760).

108720128 is an abundant number, since it is smaller than the sum of its proper divisors (142907392).

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

108720128 is a wasteful number, since it uses less digits than its factorization.

108720128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 108720128 is about 10426.8944561648. The cubic root of 108720128 is about 477.2764272295.

Adding to 108720128 its reverse (821027801), we get a palindrome (929747929).

The spelling of 108720128 in words is "one hundred eight million, seven hundred twenty thousand, one hundred twenty-eight".