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206715012 = 2237107109211
BaseRepresentation
bin11000101001000…
…11100010000100
3112101222012200120
430110203202010
5410404340022
632302341540
75060022450
oct1424434204
9471865616
10206715012
11a675a059
125928a8b0
1333a9889a
141d64d660
1513233d5c
hexc523884

206715012 has 96 divisors (see below), whose sum is σ = 564157440. Its totient is φ = 57697920.

The previous prime is 206714993. The next prime is 206715013. The reversal of 206715012 is 210517602.

It is not an unprimeable number, because it can be changed into a prime (206715013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 979587 + ... + 979797.

It is an arithmetic number, because the mean of its divisors is an integer number (5876640).

Almost surely, 2206715012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206715012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282078720).

206715012 is an abundant number, since it is smaller than the sum of its proper divisors (357442428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206715012 is a wasteful number, since it uses less digits than its factorization.

206715012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 206715012 is about 14377.5871411026. The cubic root of 206715012 is about 591.2765732626.

The spelling of 206715012 in words is "two hundred six million, seven hundred fifteen thousand, twelve".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 107 109 211 214 218 321 327 422 428 436 633 642 654 749 763 844 1266 1284 1308 1477 1498 1526 2247 2289 2532 2954 2996 3052 4431 4494 4578 5908 8862 8988 9156 11663 17724 22577 22999 23326 34989 45154 45998 46652 67731 68997 69978 81641 90308 91996 135462 137994 139956 158039 160993 163282 244923 270924 275988 316078 321986 326564 474117 482979 489846 632156 643972 948234 965958 979692 1896468 1931916 2460893 4921786 7382679 9843572 14765358 17226251 29530716 34452502 51678753 68905004 103357506 206715012