| Base | Representation |
|---|---|
| bin | 1101000000110… |
| … | …11000011101000 |
| 3 | 21121102001010000 |
| 4 | 12200123003220 |
| 5 | 210421201403 |
| 6 | 14455423000 |
| 7 | 2463603453 |
| oct | 640330350 |
| 9 | 247361100 |
| 10 | 109162728 |
| 11 | 5668a634 |
| 12 | 30684a60 |
| 13 | 1980123c |
| 14 | 106d849a |
| 15 | 98b47a3 |
| hex | 681b0e8 |
109162728 has 160 divisors (see below), whose sum is σ = 326917800. Its totient is φ = 33965568.
The previous prime is 109162727. The next prime is 109162741. The reversal of 109162728 is 827261901.
109162728 is a `hidden beast` number, since 1 + 0 + 9 + 1 + 627 + 28 = 666.
It can be written as a sum of positive squares in 4 ways, for example, as 101969604 + 7193124 = 10098^2 + 2682^2 .
It is a super-3 number, since 3×1091627283 (a number of 25 digits) contains 333 as substring.
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 = 109162692 and 109162701.
It is not an unprimeable number, because it can be changed into a prime (109162721) 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 39 ways as a sum of consecutive naturals, for example, 695226 + ... + 695382.
Almost surely, 2109162728 is an apocalyptic number.
109162728 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 109162728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163458900).
109162728 is an abundant number, since it is smaller than the sum of its proper divisors (217755072).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
109162728 is a wasteful number, since it uses less digits than its factorization.
109162728 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 241 (or 228 counting only the distinct ones).
The product of its (nonzero) digits is 12096, while the sum is 36.
The square root of 109162728 is about 10448.0968601942. The cubic root of 109162728 is about 477.9232149672.
The spelling of 109162728 in words is "one hundred nine million, one hundred sixty-two thousand, seven hundred twenty-eight".
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