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212668208 = 2417376831
BaseRepresentation
bin11001010110100…
…00111100110000
3112211011122221022
430223100330300
5413420340313
633034115012
75161435634
oct1453207460
9484148838
10212668208
11aa055855
125b27ba68
13350a149c
142035cdc4
1513a0cc08
hexcad0f30

212668208 has 20 divisors (see below), whose sum is σ = 414431808. Its totient is φ = 105718080.

The previous prime is 212668201. The next prime is 212668213. The reversal of 212668208 is 802866212.

It is not an unprimeable number, because it can be changed into a prime (212668201) 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 3 ways as a sum of consecutive naturals, for example, 35648 + ... + 41183.

Almost surely, 2212668208 is an apocalyptic number.

It is an amenable number.

212668208 is a deficient number, since it is larger than the sum of its proper divisors (201763600).

212668208 is a wasteful number, since it uses less digits than its factorization.

212668208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77012 (or 77006 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 212668208 is about 14583.1480826329. The cubic root of 212668208 is about 596.8990081002.

The spelling of 212668208 in words is "two hundred twelve million, six hundred sixty-eight thousand, two hundred eight".

Divisors: 1 2 4 8 16 173 346 692 1384 2768 76831 153662 307324 614648 1229296 13291763 26583526 53167052 106334104 212668208