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28088120 = 235702203
BaseRepresentation
bin110101100100…
…1011100111000
31221212000122202
41223021130320
524142304440
62442005332
7460513364
oct153113470
957760582
1028088120
1114945025
1294a6848
135a859b8
143a322a4
1526ec615
hex1ac9738

28088120 has 16 divisors (see below), whose sum is σ = 63198360. Its totient is φ = 11235232.

The previous prime is 28088111. The next prime is 28088141. The reversal of 28088120 is 2188082.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 351062 + ... + 351141.

Almost surely, 228088120 is an apocalyptic number.

28088120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28088120 is an abundant number, since it is smaller than the sum of its proper divisors (35110240).

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

28088120 is a wasteful number, since it uses less digits than its factorization.

28088120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702214 (or 702210 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 29.

The square root of 28088120 is about 5299.8226385418. The cubic root of 28088120 is about 303.9771162368.

The spelling of 28088120 in words is "twenty-eight million, eighty-eight thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 702203 1404406 2808812 3511015 5617624 7022030 14044060 28088120