Base | Representation |
---|---|
bin | 101000111001011111… |
… | …0010011110111111111 |
3 | 22101200220102001021220 |
4 | 1101302332103313333 |
5 | 2414333020023004 |
6 | 104203040524423 |
7 | 6226316041521 |
oct | 1216276236777 |
9 | 271626361256 |
10 | 87828282879 |
11 | 3427a859957 |
12 | 15031620713 |
13 | 8388c1416c |
14 | 4372703a11 |
15 | 2440899dd9 |
hex | 1472f93dff |
87828282879 has 8 divisors (see below), whose sum is σ = 117439921200. Its totient is φ = 58384416576.
The previous prime is 87828282851. The next prime is 87828282967. The reversal of 87828282879 is 97828282878.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a de Polignac number, because none of the positive numbers 2k-87828282879 is a prime.
It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87828286879) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41941782 + ... + 41943875.
It is an arithmetic number, because the mean of its divisors is an integer number (14679990150).
Almost surely, 287828282879 is an apocalyptic number.
87828282879 is a deficient number, since it is larger than the sum of its proper divisors (29611638321).
87828282879 is a wasteful number, since it uses less digits than its factorization.
87828282879 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 83886009.
The product of its digits is 115605504, while the sum is 69.
Subtracting 87828282879 from its reverse (97828282878), we obtain a palindrome (9999999999).
The spelling of 87828282879 in words is "eighty-seven billion, eight hundred twenty-eight million, two hundred eighty-two thousand, eight hundred seventy-nine".
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