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8223228 = 2233135857
BaseRepresentation
bin11111010111100111111100
3120110210011000
4133113213330
54101120403
6452130300
7126616266
oct37274774
916423130
108223228
114707262
122906990
13191bc20
141140b36
15ac67a3
hex7d79fc

8223228 has 48 divisors (see below), whose sum is σ = 22963360. Its totient is φ = 2529792.

The previous prime is 8223217. The next prime is 8223251.

8223228 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1525 + ... + 4332.

Almost surely, 28223228 is an apocalyptic number.

It is an amenable number.

8223228 is an abundant number, since it is smaller than the sum of its proper divisors (14740132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8223228 is a wasteful number, since it uses less digits than its factorization.

8223228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5883 (or 5875 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 8223228 is about 2867.6171292556. The cubic root of 8223228 is about 201.8431943234.

The spelling of 8223228 in words is "eight million, two hundred twenty-three thousand, two hundred twenty-eight".

Divisors: 1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 702 1404 5857 11714 17571 23428 35142 52713 70284 76141 105426 152282 158139 210852 228423 304564 316278 456846 632556 685269 913692 1370538 2055807 2741076 4111614 8223228