Base | Representation |
---|---|
bin | 101000100011001000… |
… | …0100110100011100111 |
3 | 22022202121210222022222 |
4 | 1101012100212203213 |
5 | 2411313443301041 |
6 | 104000401542555 |
7 | 6201606444125 |
oct | 1210620464347 |
9 | 268677728288 |
10 | 87078103271 |
11 | 33a25356905 |
12 | 14a62344a5b |
13 | 82996859c3 |
14 | 4300c26915 |
15 | 23e9ab474b |
hex | 14464268e7 |
87078103271 has 4 divisors (see below), whose sum is σ = 87104891544. Its totient is φ = 87051315000.
The previous prime is 87078103253. The next prime is 87078103297. The reversal of 87078103271 is 17230187078.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 87078103271 - 26 = 87078103207 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87078103471) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13389260 + ... + 13395761.
It is an arithmetic number, because the mean of its divisors is an integer number (21776222886).
Almost surely, 287078103271 is an apocalyptic number.
87078103271 is a deficient number, since it is larger than the sum of its proper divisors (26788273).
87078103271 is a wasteful number, since it uses less digits than its factorization.
87078103271 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26788272.
The product of its (nonzero) digits is 131712, while the sum is 44.
The spelling of 87078103271 in words is "eighty-seven billion, seventy-eight million, one hundred three thousand, two hundred seventy-one".
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