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228427071 = 381193887
BaseRepresentation
bin11011001110110…
…00010100111111
3120220211022000220
431213120110333
5431434131241
634355552423
75442412065
oct1547302477
9526738026
10228427071
11107a39704
12645bb713
133842b362
14224a2035
15150c2166
hexd9d853f

228427071 has 8 divisors (see below), whose sum is σ = 304948224. Its totient is φ = 152095320.

The previous prime is 228427057. The next prime is 228427103. The reversal of 228427071 is 170724822.

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

It is not a de Polignac number, because 228427071 - 211 = 228425023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228427471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44511 + ... + 49376.

It is an arithmetic number, because the mean of its divisors is an integer number (38118528).

Almost surely, 2228427071 is an apocalyptic number.

228427071 is a deficient number, since it is larger than the sum of its proper divisors (76521153).

228427071 is an equidigital number, since it uses as much as digits as its factorization.

228427071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94701.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 228427071 is about 15113.8039884074. The cubic root of 228427071 is about 611.2926730300.

The spelling of 228427071 in words is "two hundred twenty-eight million, four hundred twenty-seven thousand, seventy-one".

Divisors: 1 3 811 2433 93887 281661 76142357 228427071