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208266080 = 25511731621
BaseRepresentation
bin11000110100111…
…10001101100000
3112111220000100112
430122132031200
5411304003310
632355510452
75106142511
oct1432361540
9474800315
10208266080
11a7619430
12598b8428
13341bc889
141d934a08
151343d705
hexc69e360

208266080 has 96 divisors (see below), whose sum is σ = 544447008. Its totient is φ = 74649600.

The previous prime is 208266077. The next prime is 208266089. The reversal of 208266080 is 80662802.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208266089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127670 + ... + 129290.

It is an arithmetic number, because the mean of its divisors is an integer number (5671323).

Almost surely, 2208266080 is an apocalyptic number.

208266080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208266080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272223504).

208266080 is an abundant number, since it is smaller than the sum of its proper divisors (336180928).

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

208266080 is a wasteful number, since it uses less digits than its factorization.

208266080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1720 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 208266080 is about 14431.4268178860. The cubic root of 208266080 is about 592.7517537680.

The spelling of 208266080 in words is "two hundred eight million, two hundred sixty-six thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 32 40 44 55 73 80 88 110 146 160 176 220 292 352 365 440 584 730 803 880 1168 1460 1606 1621 1760 2336 2920 3212 3242 4015 5840 6424 6484 8030 8105 11680 12848 12968 16060 16210 17831 25696 25936 32120 32420 35662 51872 64240 64840 71324 89155 118333 128480 129680 142648 178310 236666 259360 285296 356620 473332 570592 591665 713240 946664 1183330 1301663 1426480 1893328 2366660 2603326 2852960 3786656 4733320 5206652 6508315 9466640 10413304 13016630 18933280 20826608 26033260 41653216 52066520 104133040 208266080