| Base | Representation |
|---|---|
| bin | 110101111001000… |
| … | …1100101100110000 |
| 3 | 11200000200020112000 |
| 4 | 1223302030230300 |
| 5 | 12200412240303 |
| 6 | 455234334000 |
| 7 | 62545322562 |
| oct | 15362145460 |
| 9 | 4600606460 |
| 10 | 1808321328 |
| 11 | 848828640 |
| 12 | 42572a300 |
| 13 | 22a844828 |
| 14 | 132241332 |
| 15 | a8b4dda3 |
| hex | 6bc8cb30 |
1808321328 has 160 divisors (see below), whose sum is σ = 5689516800. Its totient is φ = 545356800.
The previous prime is 1808321321. The next prime is 1808321351. The reversal of 1808321328 is 8231238081.
1808321328 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 321 + 328 = 666.
It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.
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 = 1808321292 and 1808321301.
It is not an unprimeable number, because it can be changed into a prime (1808321321) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1144443 + ... + 1146021.
It is an arithmetic number, because the mean of its divisors is an integer number (35559480).
Almost surely, 21808321328 is an apocalyptic number.
1808321328 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 1808321328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2844758400).
1808321328 is an abundant number, since it is smaller than the sum of its proper divisors (3881195472).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1808321328 is a wasteful number, since it uses less digits than its factorization.
1808321328 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1848 (or 1836 counting only the distinct ones).
The product of its (nonzero) digits is 18432, while the sum is 36.
The square root of 1808321328 is about 42524.3615825094. The cubic root of 1808321328 is about 1218.3120363387.
The spelling of 1808321328 in words is "one billion, eight hundred eight million, three hundred twenty-one thousand, three hundred twenty-eight".
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