Base | Representation |
---|---|
bin | 101000100100000101… |
… | …1111010110101110101 |
3 | 22022211212122100100210 |
4 | 1101020023322311311 |
5 | 2411400232230234 |
6 | 104003514500033 |
7 | 6202451303265 |
oct | 1211013726565 |
9 | 268755570323 |
10 | 87110430069 |
11 | 33a41626473 |
12 | 14a71134619 |
13 | 82a3293aa0 |
14 | 430523d7a5 |
15 | 23ec84cbe9 |
hex | 14482fad75 |
87110430069 has 32 divisors (see below), whose sum is σ = 130567901184. Its totient is φ = 51256877760.
The previous prime is 87110430067. The next prime is 87110430079. The reversal of 87110430069 is 96003401178.
It is not a de Polignac number, because 87110430069 - 21 = 87110430067 is a prime.
It is a super-2 number, since 2×871104300692 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87110430067) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2648644 + ... + 2681330.
It is an arithmetic number, because the mean of its divisors is an integer number (4080246912).
Almost surely, 287110430069 is an apocalyptic number.
It is an amenable number.
87110430069 is a deficient number, since it is larger than the sum of its proper divisors (43457471115).
87110430069 is a wasteful number, since it uses less digits than its factorization.
87110430069 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 35697.
The product of its (nonzero) digits is 36288, while the sum is 39.
The spelling of 87110430069 in words is "eighty-seven billion, one hundred ten million, four hundred thirty thousand, sixty-nine".
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