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247580080 = 24511353797
BaseRepresentation
bin11101100000111…
…00010110110000
3122020212101000121
432300130112300
51001340030310
640322300024
76064252546
oct1660342660
9566771017
10247580080
11117830640
126aab7614
133c3a60b7
1424c49d96
1516b070da
hexec1c5b0

247580080 has 80 divisors (see below), whose sum is σ = 630522144. Its totient is φ = 89661440.

The previous prime is 247580071. The next prime is 247580087. The reversal of 247580080 is 80085742.

247580080 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×2475800802 = 122591792025612800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247580087) 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 15 ways as a sum of consecutive naturals, for example, 310242 + ... + 311038.

Almost surely, 2247580080 is an apocalyptic number.

247580080 is a gapful number since it is divisible by the number (20) 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 247580080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315261072).

247580080 is an abundant number, since it is smaller than the sum of its proper divisors (382942064).

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

247580080 is a wasteful number, since it uses less digits than its factorization.

247580080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1168 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 247580080 is about 15734.6776261861. The cubic root of 247580080 is about 627.9213256954.

The spelling of 247580080 in words is "two hundred forty-seven million, five hundred eighty thousand, eighty".

Divisors: 1 2 4 5 8 10 11 16 20 22 40 44 55 80 88 110 176 220 353 440 706 797 880 1412 1594 1765 2824 3188 3530 3883 3985 5648 6376 7060 7766 7970 8767 12752 14120 15532 15940 17534 19415 28240 31064 31880 35068 38830 43835 62128 63760 70136 77660 87670 140272 155320 175340 281341 310640 350680 562682 701360 1125364 1406705 2250728 2813410 3094751 4501456 5626820 6189502 11253640 12379004 15473755 22507280 24758008 30947510 49516016 61895020 123790040 247580080