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208005219 = 338299293
BaseRepresentation
bin11000110010111…
…10100001100011
3112111101202112000
430121132201203
5411222131334
632350135043
75104005132
oct1431364143
9474352460
10208005219
11a7460444
12597b1483
133412ac16
141d8a7919
15133db299
hexc65e863

208005219 has 16 divisors (see below), whose sum is σ = 308560800. Its totient is φ = 138487968.

The previous prime is 208005191. The next prime is 208005229. The reversal of 208005219 is 912500802.

208005219 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 208005219 - 28 = 208004963 is a prime.

It is a super-3 number, since 3×2080052193 (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 208005192 and 208005201.

It is not an unprimeable number, because it can be changed into a prime (208005229) 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, 17737 + ... + 27029.

It is an arithmetic number, because the mean of its divisors is an integer number (19285050).

Almost surely, 2208005219 is an apocalyptic number.

208005219 is a deficient number, since it is larger than the sum of its proper divisors (100555581).

208005219 is an equidigital number, since it uses as much as digits as its factorization.

208005219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10131 (or 10125 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 208005219 is about 14422.3860369912. The cubic root of 208005219 is about 592.5041691743.

The spelling of 208005219 in words is "two hundred eight million, five thousand, two hundred nineteen".

Divisors: 1 3 9 27 829 2487 7461 9293 22383 27879 83637 250911 7703897 23111691 69335073 208005219