Base | Representation |
---|---|
bin | 100110001001… |
… | …011011010111 |
3 | 200211001112121 |
4 | 212021123113 |
5 | 10030000322 |
6 | 554200411 |
7 | 150666526 |
oct | 46113327 |
9 | 20731477 |
10 | 10000087 |
11 | 5710239 |
12 | 3423107 |
13 | 20c1916 |
14 | 14844bd |
15 | d27ec7 |
hex | 9896d7 |
10000087 has 4 divisors (see below), whose sum is σ = 10169640. Its totient is φ = 9830536.
The previous prime is 10000079. The next prime is 10000103. The reversal of 10000087 is 78000001.
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 10000087 - 23 = 10000079 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 10000087.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (10000687) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84688 + ... + 84805.
It is an arithmetic number, because the mean of its divisors is an integer number (2542410).
Almost surely, 210000087 is an apocalyptic number.
10000087 is a deficient number, since it is larger than the sum of its proper divisors (169553).
10000087 is an equidigital number, since it uses as much as digits as its factorization.
10000087 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 169552.
The product of its (nonzero) digits is 56, while the sum is 16.
The square root of 10000087 is about 3162.2914160463. The cubic root of 10000087 is about 215.4440937874. Note that the first 3 decimals are identical.
Adding to 10000087 its reverse (78000001), we get a palindrome (88000088).
The spelling of 10000087 in words is "ten million, eighty-seven", and thus it is an aban number and an uban number.
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