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28105335 = 3251736739
BaseRepresentation
bin110101100110…
…1101001110111
31221212220021100
41223031221313
524143332320
62442221143
7460614516
oct153155167
957786240
1028105335
1114956a55
1294b47b3
135a9079b
143a3867d
152702790
hex1acda77

28105335 has 24 divisors (see below), whose sum is σ = 51582960. Its totient is φ = 14107392.

The previous prime is 28105303. The next prime is 28105349. The reversal of 28105335 is 53350182.

It is not a de Polignac number, because 28105335 - 25 = 28105303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28105299 and 28105308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17605 + ... + 19134.

It is an arithmetic number, because the mean of its divisors is an integer number (2149290).

Almost surely, 228105335 is an apocalyptic number.

28105335 is a deficient number, since it is larger than the sum of its proper divisors (23477625).

28105335 is a wasteful number, since it uses less digits than its factorization.

28105335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36767 (or 36764 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 28105335 is about 5301.4465007203. The cubic root of 28105335 is about 304.0392053257.

The spelling of 28105335 in words is "twenty-eight million, one hundred five thousand, three hundred thirty-five".

Divisors: 1 3 5 9 15 17 45 51 85 153 255 765 36739 110217 183695 330651 551085 624563 1653255 1873689 3122815 5621067 9368445 28105335