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208013008 = 2474197467
BaseRepresentation
bin11000110011000…
…00011011010000
3112111102011012111
430121200123100
5411222404013
632350235104
75104036630
oct1431403320
9474364174
10208013008
11a7466285
12597b5a94
1334131628
141d8aa6c0
15133dd73d
hexc6606d0

208013008 has 80 divisors (see below), whose sum is σ = 477719424. Its totient is φ = 85893120.

The previous prime is 208012997. The next prime is 208013011. The reversal of 208013008 is 800310802.

It is a super-2 number, since 2×2080130082 = 86538822994416128, which contains 22 as substring.

208013008 is a modest number, since divided by 13008 gives 2080 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 208013008.

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 15 ways as a sum of consecutive naturals, for example, 445191 + ... + 445657.

Almost surely, 2208013008 is an apocalyptic number.

208013008 is a gapful number since it is divisible by the number (28) 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 208013008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238859712).

208013008 is an abundant number, since it is smaller than the sum of its proper divisors (269706416).

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

208013008 is a wasteful number, since it uses less digits than its factorization.

208013008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 208013008 is about 14422.6560660649. The cubic root of 208013008 is about 592.5115647538.

The spelling of 208013008 in words is "two hundred eight million, thirteen thousand, eight".

Divisors: 1 2 4 7 8 14 16 28 41 56 82 97 112 164 194 287 328 388 467 574 656 679 776 934 1148 1358 1552 1868 2296 2716 3269 3736 3977 4592 5432 6538 7472 7954 10864 13076 15908 19147 26152 27839 31816 38294 45299 52304 55678 63632 76588 90598 111356 134029 153176 181196 222712 268058 306352 317093 362392 445424 536116 634186 724784 1072232 1268372 1857259 2144464 2536744 3714518 5073488 7429036 13000813 14858072 26001626 29716144 52003252 104006504 208013008