109683728 has 80 divisors (see below), whose sum is σ = 280589184. Its totient is φ = 40212480.

The previous prime is 109683719. The next prime is 109683781. The reversal of 109683728 is 827386901.

It is a Cunningham number, because it is equal to 10473²-1.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18326 + ... + 23562.

Almost surely, 2^109683728 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 109683728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140294592).

109683728 is an abundant number, since it is smaller than the sum of its proper divisors (170905456).

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

109683728 is a wasteful number, since it uses less digits than its factorization.

109683728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5280 (or 5274 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 109683728 is about 10472.9999522582. Note that the first 4 decimals coincide. The cubic root of 109683728 is about 478.6823352163.

The spelling of 109683728 in words is "one hundred nine million, six hundred eighty-three thousand, seven hundred twenty-eight".