Base | Representation |
---|---|
bin | 101000100010110000… |
… | …0000110010001000110 |
3 | 22022201201212222101210 |
4 | 1101011200012101012 |
5 | 2411302214404402 |
6 | 103555225232250 |
7 | 6201363405510 |
oct | 1210540062106 |
9 | 268651788353 |
10 | 87065388102 |
11 | 33a19161800 |
12 | 14a5a032686 |
13 | 8296b53334 |
14 | 42dd276bb0 |
15 | 23e890206c |
hex | 1445806446 |
87065388102 has 96 divisors (see below), whose sum is σ = 223397508096. Its totient is φ = 22133168640.
The previous prime is 87065388079. The next prime is 87065388119. The reversal of 87065388102 is 20188356078.
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, 56598 + ... + 421110.
It is an arithmetic number, because the mean of its divisors is an integer number (2327057376).
Almost surely, 287065388102 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 87065388102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111698754048).
87065388102 is an abundant number, since it is smaller than the sum of its proper divisors (136332119994).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
87065388102 is a wasteful number, since it uses less digits than its factorization.
87065388102 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 364594 (or 364583 counting only the distinct ones).
The product of its (nonzero) digits is 645120, while the sum is 48.
The spelling of 87065388102 in words is "eighty-seven billion, sixty-five million, three hundred eighty-eight thousand, one hundred two".
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