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227828289 = 3135841751
BaseRepresentation
bin11011001010001…
…10001001000001
3120212200212122210
431211012021001
5431311001124
634335052333
75434336263
oct1545061101
9525625583
10227828289
1110766a847
12643710a9
133827b950
1422387b33
1515004a29
hexd946241

227828289 has 8 divisors (see below), whose sum is σ = 327138112. Its totient is φ = 140202000.

The previous prime is 227828281. The next prime is 227828309. The reversal of 227828289 is 982828722.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 227828289 - 23 = 227828281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (227828281) 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 in 7 ways as a sum of consecutive naturals, for example, 2920837 + ... + 2920914.

It is an arithmetic number, because the mean of its divisors is an integer number (40892264).

Almost surely, 2227828289 is an apocalyptic number.

It is an amenable number.

227828289 is a deficient number, since it is larger than the sum of its proper divisors (99309823).

227828289 is a wasteful number, since it uses less digits than its factorization.

227828289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841767.

The product of its digits is 516096, while the sum is 48.

The square root of 227828289 is about 15093.9818802064. The cubic root of 227828289 is about 610.7580730177.

The spelling of 227828289 in words is "two hundred twenty-seven million, eight hundred twenty-eight thousand, two hundred eighty-nine".

Divisors: 1 3 13 39 5841751 17525253 75942763 227828289