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228828173 = 7231421293
BaseRepresentation
bin11011010001110…
…10010000001101
3120221120200020112
431220322100031
5432040000143
634412325405
75446002350
oct1550722015
9527520215
10228828173
11108192aa2
1264773865
133853bab2
1422568297
1515150e18
hexda3a40d

228828173 has 8 divisors (see below), whose sum is σ = 272888448. Its totient is φ = 187610544.

The previous prime is 228828163. The next prime is 228828179. The reversal of 228828173 is 371828822.

It is a happy number.

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 228828173 - 210 = 228827149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 228828173.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228828179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710486 + ... + 710807.

It is an arithmetic number, because the mean of its divisors is an integer number (34111056).

Almost surely, 2228828173 is an apocalyptic number.

228828173 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

228828173 is a deficient number, since it is larger than the sum of its proper divisors (44060275).

228828173 is a wasteful number, since it uses less digits than its factorization.

228828173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421323.

The product of its digits is 86016, while the sum is 41.

The square root of 228828173 is about 15127.0675611633. The cubic root of 228828173 is about 611.6502595745.

The spelling of 228828173 in words is "two hundred twenty-eight million, eight hundred twenty-eight thousand, one hundred seventy-three".

Divisors: 1 7 23 161 1421293 9949051 32689739 228828173