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228181283 = 1173284161
BaseRepresentation
bin11011001100111…
…00010100100011
3120220100210212122
431212130110203
5431403300113
634350414455
75440336361
oct1546342443
9526323778
10228181283
11107890a80
126450142b
1338373515
142243a631
1515074408
hexd99c523

228181283 has 8 divisors (see below), whose sum is σ = 252335856. Its totient is φ = 204595200.

The previous prime is 228181253. The next prime is 228181333. The reversal of 228181283 is 382181822.

228181283 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 228181283 - 216 = 228115747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228181253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141278 + ... + 142883.

It is an arithmetic number, because the mean of its divisors is an integer number (31541982).

Almost surely, 2228181283 is an apocalyptic number.

228181283 is a deficient number, since it is larger than the sum of its proper divisors (24154573).

228181283 is a wasteful number, since it uses less digits than its factorization.

228181283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284245.

The product of its digits is 12288, while the sum is 35.

The square root of 228181283 is about 15105.6705577740. The cubic root of 228181283 is about 611.0733436188.

The spelling of 228181283 in words is "two hundred twenty-eight million, one hundred eighty-one thousand, two hundred eighty-three".

Divisors: 1 11 73 803 284161 3125771 20743753 228181283