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28975282 = 272239281
BaseRepresentation
bin110111010001…
…0000010110010
32000112002121121
41232202002302
524404202112
62513012454
7501200020
oct156420262
960462547
1028975282
11153a0616
12985412a
13600674b
143bc3710
152825407
hex1ba20b2

28975282 has 16 divisors (see below), whose sum is σ = 49900032. Its totient is φ = 12360960.

The previous prime is 28975277. The next prime is 28975291. The reversal of 28975282 is 28257982.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1519 + ... + 7762.

It is an arithmetic number, because the mean of its divisors is an integer number (3118752).

Almost surely, 228975282 is an apocalyptic number.

28975282 is a deficient number, since it is larger than the sum of its proper divisors (20924750).

28975282 is a wasteful number, since it uses less digits than its factorization.

28975282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513.

The product of its digits is 161280, while the sum is 43.

The square root of 28975282 is about 5382.8693092068. The cubic root of 28975282 is about 307.1443686449.

The spelling of 28975282 in words is "twenty-eight million, nine hundred seventy-five thousand, two hundred eighty-two".

Divisors: 1 2 7 14 223 446 1561 3122 9281 18562 64967 129934 2069663 4139326 14487641 28975282