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868028210 = 25731607659
BaseRepresentation
bin110011101111010…
…000111100110010
32020111100101211222
4303233100330302
53234203400320
6222044505042
730340055330
oct6357207462
92214311758
10868028210
11405a85495
1220284b182
1310aab107a
14833d6b50
1551313825
hex33bd0f32

868028210 has 64 divisors (see below), whose sum is σ = 1849098240. Its totient is φ = 287098560.

The previous prime is 868028207. The next prime is 868028267. The reversal of 868028210 is 12820868.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1316861 + ... + 1317519.

It is an arithmetic number, because the mean of its divisors is an integer number (28892160).

Almost surely, 2868028210 is an apocalyptic number.

868028210 is an abundant number, since it is smaller than the sum of its proper divisors (981070030).

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

868028210 is a wasteful number, since it uses less digits than its factorization.

868028210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 868028210 is about 29462.3184763182. The cubic root of 868028210 is about 953.9185184449.

The spelling of 868028210 in words is "eight hundred sixty-eight million, twenty-eight thousand, two hundred ten".

Divisors: 1 2 5 7 10 14 31 35 62 70 155 217 310 434 607 659 1085 1214 1318 2170 3035 3295 4249 4613 6070 6590 8498 9226 18817 20429 21245 23065 37634 40858 42490 46130 94085 102145 131719 143003 188170 204290 263438 286006 400013 658595 715015 800026 1317190 1430030 2000065 2800091 4000130 5600182 12400403 14000455 24800806 28000910 62002015 86802821 124004030 173605642 434014105 868028210