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208874220 = 223519434261
BaseRepresentation
bin11000111001100…
…10101011101100
3112120000220120020
430130302223230
5411432433340
632420522140
75114254512
oct1434625354
9476026506
10208874220
11a79a4325
1259b50350
1334373619
141da524b2
151350d9d0
hexc732aec

208874220 has 96 divisors (see below), whose sum is σ = 630094080. Its totient is φ = 51528960.

The previous prime is 208874209. The next prime is 208874279. The reversal of 208874220 is 22478802.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46890 + ... + 51150.

It is an arithmetic number, because the mean of its divisors is an integer number (6563480).

Almost surely, 2208874220 is an apocalyptic number.

208874220 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 208874220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315047040).

208874220 is an abundant number, since it is smaller than the sum of its proper divisors (421219860).

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

208874220 is a wasteful number, since it uses less digits than its factorization.

208874220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335 (or 4333 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 208874220 is about 14452.4814478345. The cubic root of 208874220 is about 593.3281410422.

The spelling of 208874220 in words is "two hundred eight million, eight hundred seventy-four thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 19 20 30 38 43 57 60 76 86 95 114 129 172 190 215 228 258 285 380 430 516 570 645 817 860 1140 1290 1634 2451 2580 3268 4085 4261 4902 8170 8522 9804 12255 12783 16340 17044 21305 24510 25566 42610 49020 51132 63915 80959 85220 127830 161918 183223 242877 255660 323836 366446 404795 485754 549669 732892 809590 916115 971508 1099338 1214385 1619180 1832230 2198676 2428770 2748345 3481237 3664460 4857540 5496690 6962474 10443711 10993380 13924948 17406185 20887422 34812370 41774844 52218555 69624740 104437110 208874220