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228230444 = 221322831193
BaseRepresentation
bin11011001101010…
…00010100101100
3120220110022022102
431212220110230
5431411333234
634351434232
75440632611
oct1546502454
9526408272
10228230444
11107914a02
1264525978
133838ca00
1422450508
1515083c7e
hexd9a852c

228230444 has 36 divisors (see below), whose sum is σ = 434381976. Its totient is φ = 104876928.

The previous prime is 228230441. The next prime is 228230501. The reversal of 228230444 is 444032822.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (228230441) 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 11 ways as a sum of consecutive naturals, for example, 190712 + ... + 191904.

It is an arithmetic number, because the mean of its divisors is an integer number (12066166).

Almost surely, 2228230444 is an apocalyptic number.

It is an amenable number.

228230444 is a deficient number, since it is larger than the sum of its proper divisors (206151532).

228230444 is a wasteful number, since it uses less digits than its factorization.

228230444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 29.

The square root of 228230444 is about 15107.2977067376. The cubic root of 228230444 is about 611.1172251314.

The spelling of 228230444 in words is "two hundred twenty-eight million, two hundred thirty thousand, four hundred forty-four".

Divisors: 1 2 4 13 26 52 169 283 338 566 676 1132 1193 2386 3679 4772 7358 14716 15509 31018 47827 62036 95654 191308 201617 337619 403234 675238 806468 1350476 4389047 8778094 17556188 57057611 114115222 228230444