108781128 has 96 divisors (see below), whose sum is σ = 302702400. Its totient is φ = 35282304.

The previous prime is 108781121. The next prime is 108781163. The reversal of 108781128 is 821187801.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 108781092 and 108781101.

It is not an unprimeable number, because it can be changed into a prime (108781121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 651301 + ... + 651467.

It is an arithmetic number, because the mean of its divisors is an integer number (3153150).

Almost surely, 2^108781128 is an apocalyptic number.

108781128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108781128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151351200).

108781128 is an abundant number, since it is smaller than the sum of its proper divisors (193921272).

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

108781128 is a wasteful number, since it uses less digits than its factorization.

108781128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 36.

The square root of 108781128 is about 10429.8191738879. The cubic root of 108781128 is about 477.3656729508.

It can be divided in two parts, 1087 and 81128, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 108781128 in words is "one hundred eight million, seven hundred eighty-one thousand, one hundred twenty-eight".