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223460 = 22511173
BaseRepresentation
bin110110100011100100
3102100112022
4312203210
524122320
64442312
71620326
oct664344
9370468
10223460
11142986
12a9398
137a933
145b616
1546325
hex368e4

223460 has 12 divisors (see below), whose sum is σ = 469308. Its totient is φ = 89376.

The previous prime is 223441. The next prime is 223463. The reversal of 223460 is 64322.

223460 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 92416 + 131044 = 304^2 + 362^2 .

It is not an unprimeable number, because it can be changed into a prime (223463) by changing a digit.

223460 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5567 + ... + 5606.

It is an arithmetic number, because the mean of its divisors is an integer number (39109).

2223460 is an apocalyptic number.

223460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223460 is an abundant number, since it is smaller than the sum of its proper divisors (245848).

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

223460 is a wasteful number, since it uses less digits than its factorization.

223460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11182 (or 11180 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 223460 is about 472.7155592954. The cubic root of 223460 is about 60.6829378460.

Adding to 223460 its reverse (64322), we get a palindrome (287782).

The spelling of 223460 in words is "two hundred twenty-three thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 11173 22346 44692 55865 111730 223460