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8197000 = 235371171
BaseRepresentation
bin11111010001001110001000
3120102110011121
4133101032020
54044301000
6451405024
7126446650
oct37211610
916373147
108197000
114699589
1228b3774
13190ccc6
141135360
15abdb1a
hex7d1388

8197000 has 64 divisors (see below), whose sum is σ = 21939840. Its totient is φ = 2808000.

The previous prime is 8196971. The next prime is 8197001. The reversal of 8197000 is 7918.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (8197001) 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 15 ways as a sum of consecutive naturals, for example, 6415 + ... + 7585.

It is an arithmetic number, because the mean of its divisors is an integer number (342810).

Almost surely, 28197000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8197000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10969920).

8197000 is an abundant number, since it is smaller than the sum of its proper divisors (13742840).

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

8197000 is a wasteful number, since it uses less digits than its factorization.

8197000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1185 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 8197000 is about 2863.0403420141. The cubic root of 8197000 is about 201.6283726969.

The spelling of 8197000 in words is "eight million, one hundred ninety-seven thousand".

Divisors: 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 100 125 140 175 200 250 280 350 500 700 875 1000 1171 1400 1750 2342 3500 4684 5855 7000 8197 9368 11710 16394 23420 29275 32788 40985 46840 58550 65576 81970 117100 146375 163940 204925 234200 292750 327880 409850 585500 819700 1024625 1171000 1639400 2049250 4098500 8197000