Base | Representation |
---|---|
bin | 101000100001010011… |
… | …1111001101110000000 |
3 | 22022121101000210121100 |
4 | 1101002213321232000 |
5 | 2411202334232313 |
6 | 103550342254400 |
7 | 6200236110351 |
oct | 1210247715600 |
9 | 268541023540 |
10 | 87017102208 |
11 | 339a3981903 |
12 | 14a45a27400 |
13 | 8289b481ba |
14 | 42d6aa7d28 |
15 | 23e4565173 |
hex | 14429f9b80 |
87017102208 has 96 divisors (see below), whose sum is σ = 251588212200. Its totient is φ = 28868152320.
The previous prime is 87017102197. The next prime is 87017102231. The reversal of 87017102208 is 80220171078.
It is a happy number.
It is a tau number, because it is divible by the number of its divisors (96).
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 11 ways as a sum of consecutive naturals, for example, 64078 + ... + 422066.
Almost surely, 287017102208 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 87017102208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125794106100).
87017102208 is an abundant number, since it is smaller than the sum of its proper divisors (164571109992).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87017102208 is a wasteful number, since it uses less digits than its factorization.
87017102208 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 358220 (or 358205 counting only the distinct ones).
The product of its (nonzero) digits is 12544, while the sum is 36.
It can be divided in two parts, 87017 and 102208, that added together give a square (189225 = 4352).
The spelling of 87017102208 in words is "eighty-seven billion, seventeen million, one hundred two thousand, two hundred eight".
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