Base | Representation |
---|---|
bin | 100100101101010000… |
… | …0111101001100000000 |
3 | 21112110122210022020120 |
4 | 1021122200331030000 |
5 | 2242414432000000 |
6 | 100114005340240 |
7 | 5460300641661 |
oct | 1113240751400 |
9 | 245418708216 |
10 | 78828000000 |
11 | 30481395142 |
12 | 1333b407680 |
13 | 75833951a9 |
14 | 3b5b257368 |
15 | 20b56646a0 |
hex | 125a83d300 |
78828000000 has 252 divisors, whose sum is σ = 262283361480. Its totient is φ = 21017600000.
The previous prime is 78827999993. The next prime is 78828000007. The reversal of 78828000000 is 82887.
It is an interprime number because it is at equal distance from previous prime (78827999993) and next prime (78828000007).
It is not an unprimeable number, because it can be changed into a prime (78828000007) by changing a digit.
It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 11996716 + ... + 12003284.
It is an arithmetic number, because the mean of its divisors is an integer number (1040806990).
Almost surely, 278828000000 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 78828000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131141680740).
78828000000 is an abundant number, since it is smaller than the sum of its proper divisors (183455361480).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78828000000 is an frugal number, since it uses more digits than its factorization.
78828000000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6618 (or 6579 counting only the distinct ones).
The product of its (nonzero) digits is 7168, while the sum is 33.
Adding to 78828000000 its reverse (82887), we get a palindrome (78828082887).
The spelling of 78828000000 in words is "seventy-eight billion, eight hundred twenty-eight million", and thus it is an aban number.
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