Base | Representation |
---|---|
bin | 1100110010101111… |
… | …11010001010010000 |
3 | 122201122122010001110 |
4 | 12121113322022100 |
5 | 103031221231010 |
6 | 3053304133320 |
7 | 332125205445 |
oct | 63127721220 |
9 | 18648563043 |
10 | 6868148880 |
11 | 2a049889aa |
12 | 13b8167240 |
13 | 855bbca28 |
14 | 4922379cc |
15 | 2a2e72120 |
hex | 1995fa290 |
6868148880 has 320 divisors, whose sum is σ = 23398502400. Its totient is φ = 1659893760.
The previous prime is 6868148879. The next prime is 6868148897. The reversal of 6868148880 is 888418686.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (57).
It is a self number, because there is not a number n which added to its sum of digits gives 6868148880.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 22083925 + ... + 22084235.
It is an arithmetic number, because the mean of its divisors is an integer number (73120320).
Almost surely, 26868148880 is an apocalyptic number.
6868148880 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 6868148880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11699251200).
6868148880 is an abundant number, since it is smaller than the sum of its proper divisors (16530353520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6868148880 is a wasteful number, since it uses less digits than its factorization.
6868148880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 542 (or 536 counting only the distinct ones).
The product of its (nonzero) digits is 4718592, while the sum is 57.
The square root of 6868148880 is about 82874.2956531155. The cubic root of 6868148880 is about 1900.8443966081.
The spelling of 6868148880 in words is "six billion, eight hundred sixty-eight million, one hundred forty-eight thousand, eight hundred eighty".
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