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17930028 = 22331157307
BaseRepresentation
bin100010001100…
…1011100101100
31020201221101010
41010121130230
514042230103
61440145220
7305255064
oct104313454
936657333
1017930028
11a137106
126008210
13393a1ac
14254a3a4
151892903
hex111972c

17930028 has 48 divisors (see below), whose sum is σ = 43602944. Its totient is φ = 5728320.

The previous prime is 17930021. The next prime is 17930039. The reversal of 17930028 is 82003971.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 17929977 and 17930004.

It is not an unprimeable number, because it can be changed into a prime (17930021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58251 + ... + 58557.

Almost surely, 217930028 is an apocalyptic number.

It is an amenable number.

17930028 is an abundant number, since it is smaller than the sum of its proper divisors (25672916).

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

17930028 is a wasteful number, since it uses less digits than its factorization.

17930028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 17930028 is about 4234.3863782135. The cubic root of 17930028 is about 261.7341085891.

Adding to 17930028 its reverse (82003971), we get a palindrome (99933999).

The spelling of 17930028 in words is "seventeen million, nine hundred thirty thousand, twenty-eight".

Divisors: 1 2 3 4 6 12 31 62 93 124 157 186 307 314 372 471 614 628 921 942 1228 1842 1884 3684 4867 9517 9734 14601 19034 19468 28551 29202 38068 48199 57102 58404 96398 114204 144597 192796 289194 578388 1494169 2988338 4482507 5976676 8965014 17930028