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28208588000 = 25537052147
BaseRepresentation
bin11010010001010111…
…001110010011100000
32200210220102202002112
4122101113032103200
5430232344304000
620543035534452
72016015020225
oct322127162340
980726382075
1028208588000
1110a6601574a
125572bba428
1328771c0cb8
14151856994c
15b0171a235
hex6915ce4e0

28208588000 has 48 divisors (see below), whose sum is σ = 69308510544. Its totient is φ = 11283433600.

The previous prime is 28208587997. The next prime is 28208588011. The reversal of 28208588000 is 88580282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3522074 + ... + 3530073.

It is an arithmetic number, because the mean of its divisors is an integer number (1443927303).

Almost surely, 228208588000 is an apocalyptic number.

28208588000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28208588000 is an abundant number, since it is smaller than the sum of its proper divisors (41099922544).

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

28208588000 is an equidigital number, since it uses as much as digits as its factorization.

28208588000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7052172 (or 7052154 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 41.

The spelling of 28208588000 in words is "twenty-eight billion, two hundred eight million, five hundred eighty-eight thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 800 1000 2000 4000 7052147 14104294 28208588 35260735 56417176 70521470 112834352 141042940 176303675 225668704 282085880 352607350 564171760 705214700 881518375 1128343520 1410429400 1763036750 2820858800 3526073500 5641717600 7052147000 14104294000 28208588000