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228410185 = 5313145949
BaseRepresentation
bin11011001110101…
…00001101001001
3120220210102212111
431213110031021
5431433111220
634355342321
75442311623
oct1547241511
9526712774
10228410185
11107a27a53
12645b19a1
1338423773
1422499c13
15150bc15a
hexd9d4349

228410185 has 8 divisors (see below), whose sum is σ = 274969800. Its totient is φ = 182143104.

The previous prime is 228410173. The next prime is 228410207. The reversal of 228410185 is 581014822.

228410185 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 26656569 + 201753616 = 5163^2 + 14204^2 .

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 228410185 - 29 = 228409673 is a prime.

It is a super-2 number, since 2×2284101852 = 104342425223468450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71410 + ... + 74539.

It is an arithmetic number, because the mean of its divisors is an integer number (34371225).

Almost surely, 2228410185 is an apocalyptic number.

It is an amenable number.

228410185 is a deficient number, since it is larger than the sum of its proper divisors (46559615).

228410185 is a wasteful number, since it uses less digits than its factorization.

228410185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146267.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 228410185 is about 15113.2453496924. The cubic root of 228410185 is about 611.2776098089.

The spelling of 228410185 in words is "two hundred twenty-eight million, four hundred ten thousand, one hundred eighty-five".

Divisors: 1 5 313 1565 145949 729745 45682037 228410185