Base | Representation |
---|---|
bin | 11111010101101010100001 |
3 | 120110101010201 |
4 | 133111222201 |
5 | 4100341301 |
6 | 452025201 |
7 | 126554011 |
oct | 37255241 |
9 | 16411121 |
10 | 8215201 |
11 | 4701225 |
12 | 2902201 |
13 | 1918387 |
14 | 113bc41 |
15 | ac4201 |
hex | 7d5aa1 |
8215201 has 8 divisors (see below), whose sum is σ = 8767520. Its totient is φ = 7674912.
The previous prime is 8215187. The next prime is 8215237. The reversal of 8215201 is 1025128.
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 8215201 - 213 = 8207009 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (19).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (8215001) 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 7 ways as a sum of consecutive naturals, for example, 1575 + ... + 4348.
It is an arithmetic number, because the mean of its divisors is an integer number (1095940).
Almost surely, 28215201 is an apocalyptic number.
It is an amenable number.
8215201 is a deficient number, since it is larger than the sum of its proper divisors (552319).
8215201 is a wasteful number, since it uses less digits than its factorization.
8215201 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6015.
The product of its (nonzero) digits is 160, while the sum is 19.
The square root of 8215201 is about 2866.2171934450. The cubic root of 8215201 is about 201.7774973820. Note that the first 3 decimals are identical.
The spelling of 8215201 in words is "eight million, two hundred fifteen thousand, two hundred one".
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