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208384512 = 293719381
BaseRepresentation
bin11000110101110…
…11001000000000
3112112010000210220
430122323020000
5411321301022
632402223040
75110145010
oct1432731000
9475100726
10208384512
11a769a406
1259954a80
133423175b
141d965c40
151346385c
hexc6bb200

208384512 has 80 divisors (see below), whose sum is σ = 634489152. Its totient is φ = 59535360.

The previous prime is 208384489. The next prime is 208384529. The reversal of 208384512 is 215483802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062 + ... + 20442.

Almost surely, 2208384512 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 208384512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317244576).

208384512 is an abundant number, since it is smaller than the sum of its proper divisors (426104640).

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

208384512 is an equidigital number, since it uses as much as digits as its factorization.

208384512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19409 (or 19393 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 208384512 is about 14435.5295018922. The cubic root of 208384512 is about 592.8640899890.

The spelling of 208384512 in words is "two hundred eight million, three hundred eighty-four thousand, five hundred twelve".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 1344 1536 1792 2688 3584 5376 10752 19381 38762 58143 77524 116286 135667 155048 232572 271334 310096 407001 465144 542668 620192 814002 930288 1085336 1240384 1628004 1860576 2170672 2480768 3256008 3721152 4341344 4961536 6512016 7442304 8682688 9923072 13024032 14884608 17365376 26048064 29769216 34730752 52096128 69461504 104192256 208384512