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208942888 = 23711418273
BaseRepresentation
bin11000111010000…
…11011100101000
3112120011101202111
430131003130220
5411442133023
632422212104
75114661640
oct1435033450
9476141674
10208942888
11a7a40980
1259b84034
133439895b
141da6d520
151352400d
hexc743728

208942888 has 64 divisors (see below), whose sum is σ = 500411520. Its totient is φ = 79411200.

The previous prime is 208942861. The next prime is 208942919. The reversal of 208942888 is 888249802.

208942888 is nontrivially palindromic in base 9.

It is an unprimeable number.

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, 21120 + ... + 29392.

It is an arithmetic number, because the mean of its divisors is an integer number (7818930).

Almost surely, 2208942888 is an apocalyptic number.

208942888 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 208942888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250205760).

208942888 is an abundant number, since it is smaller than the sum of its proper divisors (291468632).

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

208942888 is a wasteful number, since it uses less digits than its factorization.

208942888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8338 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 49.

The square root of 208942888 is about 14454.8569000181. The cubic root of 208942888 is about 593.3931533622.

The spelling of 208942888 in words is "two hundred eight million, nine hundred forty-two thousand, eight hundred eighty-eight".

Divisors: 1 2 4 7 8 11 14 22 28 41 44 56 77 82 88 154 164 287 308 328 451 574 616 902 1148 1804 2296 3157 3608 6314 8273 12628 16546 25256 33092 57911 66184 91003 115822 182006 231644 339193 364012 463288 637021 678386 728024 1274042 1356772 2374351 2548084 2713544 3731123 4748702 5096168 7462246 9497404 14924492 18994808 26117861 29848984 52235722 104471444 208942888