Base | Representation |
---|---|
bin | 1010011110110… |
… | …11011110110111 |
3 | 20010110100101120 |
4 | 11033123132313 |
5 | 140002241212 |
6 | 12420355023 |
7 | 2115254016 |
oct | 517333667 |
9 | 203410346 |
10 | 87930807 |
11 | 456a8798 |
12 | 25545a73 |
13 | 152a9183 |
14 | b96ca7d |
15 | 7abd88c |
hex | 53db7b7 |
87930807 has 8 divisors (see below), whose sum is σ = 117432960. Its totient is φ = 58524600.
The previous prime is 87930793. The next prime is 87930809. The reversal of 87930807 is 70803978.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 87930807 - 210 = 87929783 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (87930809) 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 7 ways as a sum of consecutive naturals, for example, 21819 + ... + 25532.
It is an arithmetic number, because the mean of its divisors is an integer number (14679120).
Almost surely, 287930807 is an apocalyptic number.
87930807 is a deficient number, since it is larger than the sum of its proper divisors (29502153).
87930807 is a wasteful number, since it uses less digits than its factorization.
87930807 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 47973.
The product of its (nonzero) digits is 84672, while the sum is 42.
The square root of 87930807 is about 9377.1427951162. The cubic root of 87930807 is about 444.6794088683.
The spelling of 87930807 in words is "eighty-seven million, nine hundred thirty thousand, eight hundred seven".
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