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82480000 = 27541031
BaseRepresentation
bin1001110101010…
…00101110000000
312202012102021211
410322220232000
5132103330000
612103455504
72021032321
oct472505600
9182172254
1082480000
1142615499
1223757594
131411b145
14ad50448
1573937ba
hex4ea8b80

82480000 has 80 divisors (see below), whose sum is σ = 205527960. Its totient is φ = 32960000.

The previous prime is 82479997. The next prime is 82480009. The reversal of 82480000 is 8428.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82480009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79485 + ... + 80515.

Almost surely, 282480000 is an apocalyptic number.

82480000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82480000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102763980).

82480000 is an abundant number, since it is smaller than the sum of its proper divisors (123047960).

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

82480000 is an equidigital number, since it uses as much as digits as its factorization.

82480000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1038 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 82480000 is about 9081.8500317942. The cubic root of 82480000 is about 435.2942035835.

Adding to 82480000 its reverse (8428), we get a palindrome (82488428).

The spelling of 82480000 in words is "eighty-two million, four hundred eighty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 320 400 500 625 640 800 1000 1031 1250 1600 2000 2062 2500 3200 4000 4124 5000 5155 8000 8248 10000 10310 16000 16496 20000 20620 25775 32992 40000 41240 51550 65984 80000 82480 103100 128875 131968 164960 206200 257750 329920 412400 515500 644375 659840 824800 1031000 1288750 1649600 2062000 2577500 3299200 4124000 5155000 8248000 10310000 16496000 20620000 41240000 82480000