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206315260 = 225107229421
BaseRepresentation
bin11000100110000…
…01111011111100
3112101012220022221
430103001323330
5410304042020
632250015124
75053436134
oct1423017374
9471186287
10206315260
11a6506788
12591174a4
1333988948
141d587ac4
15131a56aa
hexc4c1efc

206315260 has 48 divisors (see below), whose sum is σ = 440264160. Its totient is φ = 81204480.

The previous prime is 206315257. The next prime is 206315303. The reversal of 206315260 is 62513602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 489850 + ... + 490270.

It is an arithmetic number, because the mean of its divisors is an integer number (9172170).

Almost surely, 2206315260 is an apocalyptic number.

206315260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206315260 is an abundant number, since it is smaller than the sum of its proper divisors (233948900).

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

206315260 is a wasteful number, since it uses less digits than its factorization.

206315260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766 (or 764 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 206315260 is about 14363.6784982121. The cubic root of 206315260 is about 590.8951842236.

Adding to 206315260 its reverse (62513602), we get a palindrome (268828862).

The spelling of 206315260 in words is "two hundred six million, three hundred fifteen thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 107 214 229 421 428 458 535 842 916 1070 1145 1684 2105 2140 2290 4210 4580 8420 24503 45047 49006 90094 96409 98012 122515 180188 192818 225235 245030 385636 450470 482045 490060 900940 964090 1928180 10315763 20631526 41263052 51578815 103157630 206315260