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2005005211 = 11217532347
BaseRepresentation
bin111011110000001…
…1111001110011011
312011201202211002021
41313200133032123
513101240131321
6530542115311
7100454156146
oct16740371633
95151684067
102005005211
11939856100
1247b57bb37
1325c50a621
141503dd05d
15bb050941
hex7781f39b

2005005211 has 36 divisors (see below), whose sum is σ = 2385199656. Its totient is φ = 1678293760.

The previous prime is 2005005203. The next prime is 2005005221. The reversal of 2005005211 is 1125005002.

It is not a de Polignac number, because 2005005211 - 23 = 2005005203 is a prime.

It is a super-2 number, since 2×20050052112 = 8040091792274309042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2005005221) 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 35 ways as a sum of consecutive naturals, for example, 5777940 + ... + 5778286.

It is an arithmetic number, because the mean of its divisors is an integer number (66255546).

Almost surely, 22005005211 is an apocalyptic number.

2005005211 is a deficient number, since it is larger than the sum of its proper divisors (380194445).

2005005211 is a wasteful number, since it uses less digits than its factorization.

2005005211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 16.

The square root of 2005005211 is about 44777.2845424999. The cubic root of 2005005211 is about 1260.9712027917.

The spelling of 2005005211 in words is "two billion, five million, five thousand, two hundred eleven".

Divisors: 1 11 17 53 121 187 347 583 901 2057 2809 3817 5899 6413 9911 18391 30899 41987 47753 64889 109021 202301 312647 339889 525283 713779 974723 2225311 3439117 5778113 10721953 16570291 37830287 117941483 182273201 2005005211