Base | Representation |
---|---|
bin | 11001101000010… |
… | …10001111000111 |
3 | 112222120010120020 |
4 | 30310022033013 |
5 | 420020000012 |
6 | 33200110223 |
7 | 5220320115 |
oct | 1464121707 |
9 | 488503506 |
10 | 215000007 |
11 | 1003a8762 |
12 | 60005373 |
13 | 35709951 |
14 | 207a8ab5 |
15 | 13d1da8c |
hex | cd0a3c7 |
215000007 has 16 divisors (see below), whose sum is σ = 294991872. Its totient is φ = 139186080.
The previous prime is 214999987. The next prime is 215000033. The reversal of 215000007 is 700000512.
It is a happy number.
215000007 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 215000007 - 215 = 214967239 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 215000007.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (215000047) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65782 + ... + 68972.
It is an arithmetic number, because the mean of its divisors is an integer number (18436992).
Almost surely, 2215000007 is an apocalyptic number.
215000007 is a deficient number, since it is larger than the sum of its proper divisors (79991865).
215000007 is a wasteful number, since it uses less digits than its factorization.
215000007 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3838.
The product of its (nonzero) digits is 70, while the sum is 15.
The square root of 215000007 is about 14662.8785373132. The cubic root of 215000007 is about 599.0726479911.
Adding to 215000007 its reverse (700000512), we get a palindrome (915000519).
The spelling of 215000007 in words is "two hundred fifteen million, seven", and thus it is an aban number.
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