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216230 = 2573089
BaseRepresentation
bin110100110010100110
3101222121112
4310302212
523404410
64345022
71560260
oct646246
9358545
10216230
11138503
12a5172
1377561
1458b30
1544105
hex34ca6

216230 has 16 divisors (see below), whose sum is σ = 444960. Its totient is φ = 74112.

The previous prime is 216217. The next prime is 216233. The reversal of 216230 is 32612.

216230 = 2312 + 2322 + ... + 2342.

216230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216233) by changing a digit.

216230 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 7 ways as a sum of consecutive naturals, for example, 1475 + ... + 1614.

It is an arithmetic number, because the mean of its divisors is an integer number (27810).

2216230 is an apocalyptic number.

216230 is an abundant number, since it is smaller than the sum of its proper divisors (228730).

It is a weird number, because it is abundant, but not a pseudoperfect number.

216230 is a wasteful number, since it uses less digits than its factorization.

216230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 216230 is about 465.0053763130. The cubic root of 216230 is about 60.0212887419.

Adding to 216230 its reverse (32612), we get a palindrome (248842).

The spelling of 216230 in words is "two hundred sixteen thousand, two hundred thirty".

Divisors: 1 2 5 7 10 14 35 70 3089 6178 15445 21623 30890 43246 108115 216230