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8681120 = 255723337
BaseRepresentation
bin100001000111…
…011010100000
3121100001020222
4201013122200
54210243440
6510022212
7133534250
oct41073240
917301228
108681120
11499a288
122aa7968
131a4c476
14121d960
15b672b5
hex8476a0

8681120 has 96 divisors (see below), whose sum is σ = 24530688. Its totient is φ = 2838528.

The previous prime is 8681117. The next prime is 8681129. The reversal of 8681120 is 211868.

It is a self number, because there is not a number n which added to its sum of digits gives 8681120.

It is not an unprimeable number, because it can be changed into a prime (8681129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25592 + ... + 25928.

It is an arithmetic number, because the mean of its divisors is an integer number (255528).

Almost surely, 28681120 is an apocalyptic number.

8681120 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 8681120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12265344).

8681120 is an abundant number, since it is smaller than the sum of its proper divisors (15849568).

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

8681120 is a wasteful number, since it uses less digits than its factorization.

8681120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 8681120 is about 2946.3740427855. The cubic root of 8681120 is about 205.5221272914.

Adding to 8681120 its reverse (211868), we get a palindrome (8892988).

The spelling of 8681120 in words is "eight million, six hundred eighty-one thousand, one hundred twenty".

Divisors: 1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 56 70 80 92 112 115 140 160 161 184 224 230 280 322 337 368 460 560 644 674 736 805 920 1120 1288 1348 1610 1685 1840 2359 2576 2696 3220 3370 3680 4718 5152 5392 6440 6740 7751 9436 10784 11795 12880 13480 15502 18872 23590 25760 26960 31004 37744 38755 47180 53920 54257 62008 75488 77510 94360 108514 124016 155020 188720 217028 248032 271285 310040 377440 434056 542570 620080 868112 1085140 1240160 1736224 2170280 4340560 8681120