Base | Representation |
---|---|
bin | 100000000011000001… |
… | …1010111110011011000 |
3 | 20120122020220020210100 |
4 | 1000012003113303120 |
5 | 2111421140231320 |
6 | 51341013215400 |
7 | 4654310023503 |
oct | 1000603276330 |
9 | 216566806710 |
10 | 68821023960 |
11 | 27206745a07 |
12 | 11408031560 |
13 | 664a1046b0 |
14 | 348c1da13a |
15 | 1bcbd79790 |
hex | 10060d7cd8 |
68821023960 has 192 divisors, whose sum is σ = 246749237280. Its totient is φ = 16527329280.
The previous prime is 68821023949. The next prime is 68821024003. The reversal of 68821023960 is 6932012886.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12547 + ... + 371213.
Almost surely, 268821023960 is an apocalyptic number.
68821023960 is a gapful number since it is divisible by the number (60) 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 68821023960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123374618640).
68821023960 is an abundant number, since it is smaller than the sum of its proper divisors (177928213320).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68821023960 is a wasteful number, since it uses less digits than its factorization.
68821023960 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 358738 (or 358731 counting only the distinct ones).
The product of its (nonzero) digits is 248832, while the sum is 45.
The spelling of 68821023960 in words is "sixty-eight billion, eight hundred twenty-one million, twenty-three thousand, nine hundred sixty".
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