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222631230 = 23541181001
BaseRepresentation
bin11010100010100…
…01010100111110
3120111220211122010
431101101110332
5423443144410
634031432050
75342222433
oct1521212476
9514824563
10222631230
11104740158
1262685626
133717c273
14217d3b8a
1514829c20
hexd45153e

222631230 has 32 divisors (see below), whose sum is σ = 547350048. Its totient is φ = 57920000.

The previous prime is 222631219. The next prime is 222631247. The reversal of 222631230 is 32136222.

222631230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 222631197 and 222631206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89271 + ... + 91730.

It is an arithmetic number, because the mean of its divisors is an integer number (17104689).

Almost surely, 2222631230 is an apocalyptic number.

222631230 is an abundant number, since it is smaller than the sum of its proper divisors (324718818).

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

222631230 is a wasteful number, since it uses less digits than its factorization.

222631230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181052.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 222631230 is about 14920.8320813552. The cubic root of 222631230 is about 606.0782447520.

Adding to 222631230 its reverse (32136222), we get a palindrome (254767452).

The spelling of 222631230 in words is "two hundred twenty-two million, six hundred thirty-one thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 30 41 82 123 205 246 410 615 1230 181001 362002 543003 905005 1086006 1810010 2715015 5430030 7421041 14842082 22263123 37105205 44526246 74210410 111315615 222631230