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69980211 = 32717192181
BaseRepresentation
bin1000010101111…
…01000000110011
311212200100210200
410022331000303
5120403331321
610535530243
71506551640
oct412750063
9155610720
1069980211
1136558194
121b529983
1311662812
149418dc7
156224d26
hex42bd033

69980211 has 72 divisors (see below), whose sum is σ = 129808224. Its totient is φ = 35458560.

The previous prime is 69980201. The next prime is 69980213. The reversal of 69980211 is 11208996.

It is not a de Polignac number, because 69980211 - 25 = 69980179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69980213) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 386541 + ... + 386721.

It is an arithmetic number, because the mean of its divisors is an integer number (1802892).

Almost surely, 269980211 is an apocalyptic number.

69980211 is a deficient number, since it is larger than the sum of its proper divisors (59828013).

69980211 is a wasteful number, since it uses less digits than its factorization.

69980211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 69980211 is about 8365.4175627998. The cubic root of 69980211 is about 412.0896900755.

The spelling of 69980211 in words is "sixty-nine million, nine hundred eighty thousand, two hundred eleven".

Divisors: 1 3 7 9 17 19 21 51 57 63 119 133 153 171 181 323 357 361 399 543 969 1071 1083 1197 1267 1629 2261 2527 2907 3077 3249 3439 3801 6137 6783 7581 9231 10317 11403 18411 20349 21539 22743 24073 27693 30951 42959 55233 58463 64617 65341 72219 128877 175389 193851 196023 216657 386631 409241 457387 526167 588069 1110797 1227723 1372161 3332391 3683169 4116483 7775579 9997173 23326737 69980211