Base | Representation |
---|---|
bin | 111011010000011… |
… | …0110011110000000 |
3 | 12010120101021200000 |
4 | 1312200312132000 |
5 | 13033002320300 |
6 | 525144400000 |
7 | 100162316433 |
oct | 16640663600 |
9 | 5116337600 |
10 | 1988323200 |
11 | 9303a1716 |
12 | 475a76000 |
13 | 258c19506 |
14 | 14c0d981a |
15 | b9857c00 |
hex | 76836780 |
1988323200 has 288 divisors, whose sum is σ = 7360440360. Its totient is φ = 530012160.
The previous prime is 1988323193. The next prime is 1988323217. The reversal of 1988323200 is 23238891.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (288).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 776322 + ... + 778878.
Almost surely, 21988323200 is an apocalyptic number.
1988323200 is a gapful number since it is divisible by the number (10) 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 1988323200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3680220180).
1988323200 is an abundant number, since it is smaller than the sum of its proper divisors (5372117160).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1988323200 is an equidigital number, since it uses as much as digits as its factorization.
1988323200 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2596 (or 2567 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
The square root of 1988323200 is about 44590.6178472557. The cubic root of 1988323200 is about 1257.4642881350.
The spelling of 1988323200 in words is "one billion, nine hundred eighty-eight million, three hundred twenty-three thousand, two hundred".
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