Base | Representation |
---|---|
bin | 1010011000101… |
… | …11001101111011 |
3 | 20001221111122111 |
4 | 11030113031323 |
5 | 134301030112 |
6 | 12351233151 |
7 | 2105365210 |
oct | 514271573 |
9 | 201844574 |
10 | 87126907 |
11 | 451a980a |
12 | 252187b7 |
13 | 150872aa |
14 | b7ddb07 |
15 | 79b05a7 |
hex | 531737b |
87126907 has 8 divisors (see below), whose sum is σ = 99900416. Its totient is φ = 74435112.
The previous prime is 87126899. The next prime is 87126911. The reversal of 87126907 is 70962178.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 87126907 - 23 = 87126899 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 87126907.
It is not an unprimeable number, because it can be changed into a prime (87126917) 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, 18123 + ... + 22420.
It is an arithmetic number, because the mean of its divisors is an integer number (12487552).
Almost surely, 287126907 is an apocalyptic number.
87126907 is a deficient number, since it is larger than the sum of its proper divisors (12773509).
87126907 is a wasteful number, since it uses less digits than its factorization.
87126907 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 40857.
The product of its (nonzero) digits is 42336, while the sum is 40.
The square root of 87126907 is about 9334.1795033093. The cubic root of 87126907 is about 443.3201099692.
The spelling of 87126907 in words is "eighty-seven million, one hundred twenty-six thousand, nine hundred seven".
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