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228523063 = 372792113
BaseRepresentation
bin11011001111011…
…11110000110111
3120221000011201011
431213233300313
5432000214223
634402013051
75443261666
oct1547576067
9527004634
10228523063
11107aa483a
1264647187
1338462c62
14224c8ddd
15150e080d
hexd9efc37

228523063 has 12 divisors (see below), whose sum is σ = 237951840. Its totient is φ = 219428352.

The previous prime is 228523037. The next prime is 228523073. The reversal of 228523063 is 360325822.

It is a de Polignac number, because none of the positive numbers 2k-228523063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228523033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107095 + ... + 109207.

It is an arithmetic number, because the mean of its divisors is an integer number (19829320).

Almost surely, 2228523063 is an apocalyptic number.

228523063 is a deficient number, since it is larger than the sum of its proper divisors (9428777).

228523063 is an equidigital number, since it uses as much as digits as its factorization.

228523063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266 (or 2229 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 228523063 is about 15116.9792948195. The cubic root of 228523063 is about 611.3782889604.

Adding to 228523063 its reverse (360325822), we get a palindrome (588848885).

The spelling of 228523063 in words is "two hundred twenty-eight million, five hundred twenty-three thousand, sixty-three".

Divisors: 1 37 79 1369 2113 2923 78181 108151 166927 2892697 6176299 228523063