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28283360 = 255725253
BaseRepresentation
bin110101111100…
…1000111100000
31222012221110212
41223321013200
524220031420
62450113252
7462255530
oct153710740
958187425
1028283360
1114a68786
12957b828
135b23821
143a834c0
15273a3c5
hex1af91e0

28283360 has 48 divisors (see below), whose sum is σ = 76368096. Its totient is φ = 9696768.

The previous prime is 28283351. The next prime is 28283363. The reversal of 28283360 is 6338282.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28283363) 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 7 ways as a sum of consecutive naturals, for example, 11507 + ... + 13746.

It is an arithmetic number, because the mean of its divisors is an integer number (1591002).

Almost surely, 228283360 is an apocalyptic number.

28283360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28283360 is an abundant number, since it is smaller than the sum of its proper divisors (48084736).

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

28283360 is a wasteful number, since it uses less digits than its factorization.

28283360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25275 (or 25267 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 28283360 is about 5318.2102252544. The cubic root of 28283360 is about 304.6798037153.

The spelling of 28283360 in words is "twenty-eight million, two hundred eighty-three thousand, three hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 70 80 112 140 160 224 280 560 1120 25253 50506 101012 126265 176771 202024 252530 353542 404048 505060 707084 808096 883855 1010120 1414168 1767710 2020240 2828336 3535420 4040480 5656672 7070840 14141680 28283360