Base | Representation |
---|---|
bin | 101000111000111010… |
… | …0100010000011010101 |
3 | 22101122120000102222220 |
4 | 1101301310202003111 |
5 | 2414313042123133 |
6 | 104201110212553 |
7 | 6225662460132 |
oct | 1216164420325 |
9 | 271576012886 |
10 | 87808942293 |
11 | 3426a949aa6 |
12 | 15027054159 |
13 | 8384c01c27 |
14 | 436dd0b589 |
15 | 243dd295b3 |
hex | 1471d220d5 |
87808942293 has 8 divisors (see below), whose sum is σ = 117106213056. Its totient is φ = 58525483200.
The previous prime is 87808942289. The next prime is 87808942297. The reversal of 87808942293 is 39224980878.
It is an interprime number because it is at equal distance from previous prime (87808942289) and next prime (87808942297).
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 87808942293 - 22 = 87808942289 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87808942297) 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, 3438073 + ... + 3463518.
It is an arithmetic number, because the mean of its divisors is an integer number (14638276632).
Almost surely, 287808942293 is an apocalyptic number.
It is an amenable number.
87808942293 is a deficient number, since it is larger than the sum of its proper divisors (29297270763).
87808942293 is a wasteful number, since it uses less digits than its factorization.
87808942293 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6905835.
The product of its (nonzero) digits is 13934592, while the sum is 60.
The spelling of 87808942293 in words is "eighty-seven billion, eight hundred eight million, nine hundred forty-two thousand, two hundred ninety-three".
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