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28014328 = 2331374371
BaseRepresentation
bin110101011011…
…1011011111000
31221201021102201
41222313123320
524132424303
62440235544
7460055266
oct152673370
957637381
1028014328
11148a4641
12946bbb4
135a5b234
143a13436
1526d581d
hex1ab76f8

28014328 has 64 divisors (see below), whose sum is σ = 57784320. Its totient is φ = 12700800.

The previous prime is 28014323. The next prime is 28014331. The reversal of 28014328 is 82341082.

It is a junction number, because it is equal to n+sod(n) for n = 28014296 and 28014305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28014323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394533 + ... + 394603.

It is an arithmetic number, because the mean of its divisors is an integer number (902880).

Almost surely, 228014328 is an apocalyptic number.

It is an amenable number.

28014328 is an abundant number, since it is smaller than the sum of its proper divisors (29769992).

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

28014328 is a wasteful number, since it uses less digits than its factorization.

28014328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 28014328 is about 5292.8563177173. The cubic root of 28014328 is about 303.7106838871.

The spelling of 28014328 in words is "twenty-eight million, fourteen thousand, three hundred twenty-eight".

Divisors: 1 2 4 8 31 37 43 62 71 74 86 124 142 148 172 248 284 296 344 568 1147 1333 1591 2201 2294 2627 2666 3053 3182 4402 4588 5254 5332 6106 6364 8804 9176 10508 10664 12212 12728 17608 21016 24424 49321 81437 94643 98642 112961 162874 189286 197284 225922 325748 378572 394568 451844 651496 757144 903688 3501791 7003582 14007164 28014328