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28050082800 = 2435223375069
BaseRepresentation
bin11010000111111010…
…100100101111110000
32200101212011211211120
4122013322210233300
5424421310122200
620515214342240
72012051525025
oct320772445760
980355154746
1028050082800
11109945a4413
125529aba980
132850404a3c
1415014a954c
15ae285a9a0
hex687ea4bf0

28050082800 has 60 divisors (see below), whose sum is σ = 89853769080. Its totient is φ = 7480021760.

The previous prime is 28050082799. The next prime is 28050082813. The reversal of 28050082800 is 828005082.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11686335 + ... + 11688734.

It is an arithmetic number, because the mean of its divisors is an integer number (1497562818).

Almost surely, 228050082800 is an apocalyptic number.

28050082800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28050082800 is an abundant number, since it is smaller than the sum of its proper divisors (61803686280).

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

28050082800 is a wasteful number, since it uses less digits than its factorization.

28050082800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23375090 (or 23375079 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

Adding to 28050082800 its reverse (828005082), we get a palindrome (28878087882).

The spelling of 28050082800 in words is "twenty-eight billion, fifty million, eighty-two thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 40 48 50 60 75 80 100 120 150 200 240 300 400 600 1200 23375069 46750138 70125207 93500276 116875345 140250414 187000552 233750690 280500828 350626035 374001104 467501380 561001656 584376725 701252070 935002760 1122003312 1168753450 1402504140 1753130175 1870005520 2337506900 2805008280 3506260350 4675013800 5610016560 7012520700 9350027600 14025041400 28050082800