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228248203 = 619368737
BaseRepresentation
bin11011001101011…
…00101010001011
3120220111012200011
431212230222023
5431412420303
634352052351
75441035441
oct1546545213
9526435604
10228248203
11107927287
12645340b7
1338397b11
1422456b91
151508916d
hexd9aca8b

228248203 has 4 divisors (see below), whose sum is σ = 228617560. Its totient is φ = 227878848.

The previous prime is 228248201. The next prime is 228248221. The reversal of 228248203 is 302842822.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 302842822 = 2151421411.

It is a cyclic number.

It is not a de Polignac number, because 228248203 - 21 = 228248201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228248201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183750 + ... + 184987.

It is an arithmetic number, because the mean of its divisors is an integer number (57154390).

Almost surely, 2228248203 is an apocalyptic number.

228248203 is a deficient number, since it is larger than the sum of its proper divisors (369357).

228248203 is an equidigital number, since it uses as much as digits as its factorization.

228248203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369356.

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 228248203 is about 15107.8854576013. The cubic root of 228248203 is about 611.1330754114.

The spelling of 228248203 in words is "two hundred twenty-eight million, two hundred forty-eight thousand, two hundred three".

Divisors: 1 619 368737 228248203