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228828479 = 1122990841
BaseRepresentation
bin11011010001110…
…10010100111111
3120221120200122212
431220322110333
5432040002404
634412331035
75446003265
oct1550722477
9527520585
10228828479
11108193250
1264773a7b
133853bc89
1422568435
151515106e
hexda3a53f

228828479 has 8 divisors (see below), whose sum is σ = 250723920. Its totient is φ = 207115200.

The previous prime is 228828469. The next prime is 228828539. The reversal of 228828479 is 974828822.

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 228828479 - 212 = 228824383 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 (228828469) 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, 42902 + ... + 47939.

It is an arithmetic number, because the mean of its divisors is an integer number (31340490).

Almost surely, 2228828479 is an apocalyptic number.

228828479 is a deficient number, since it is larger than the sum of its proper divisors (21895441).

228828479 is a wasteful number, since it uses less digits than its factorization.

228828479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91081.

The product of its digits is 1032192, while the sum is 50.

The square root of 228828479 is about 15127.0776754798. The cubic root of 228828479 is about 611.6505322171.

The spelling of 228828479 in words is "two hundred twenty-eight million, eight hundred twenty-eight thousand, four hundred seventy-nine".

Divisors: 1 11 229 2519 90841 999251 20802589 228828479