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223208 = 2327901
BaseRepresentation
bin110110011111101000
3102100011222
4312133220
524120313
64441212
71616516
oct663750
9370158
10223208
11142777
12a9208
137a79b
145b4b6
1546208
hex367e8

223208 has 8 divisors (see below), whose sum is σ = 418530. Its totient is φ = 111600.

The previous prime is 223207. The next prime is 223211. The reversal of 223208 is 802322.

223208 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 77284 = 382^2 + 278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×2232083 = 33361880545844736, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (223207) by changing a digit.

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 as a sum of consecutive naturals, namely, 13943 + ... + 13958.

2223208 is an apocalyptic number.

It is an amenable number.

223208 is a deficient number, since it is larger than the sum of its proper divisors (195322).

223208 is a wasteful number, since it uses less digits than its factorization.

223208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27907 (or 27903 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 223208 is about 472.4489390400. The cubic root of 223208 is about 60.6601181731.

The spelling of 223208 in words is "two hundred twenty-three thousand, two hundred eight".

Divisors: 1 2 4 8 27901 55802 111604 223208