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18882080 = 255723733
BaseRepresentation
bin100100000000…
…1111000100000
31022112022100022
41020001320200
514313211310
61512413012
7316331540
oct110017040
938468308
1018882080
11a727428
1263a7168
133bb1639
142717320
1519cea55
hex1201e20

18882080 has 96 divisors (see below), whose sum is σ = 53270784. Its totient is φ = 6183936.

The previous prime is 18882049. The next prime is 18882113. The reversal of 18882080 is 8028881.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 18882080.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25394 + ... + 26126.

It is an arithmetic number, because the mean of its divisors is an integer number (554904).

Almost surely, 218882080 is an apocalyptic number.

18882080 is a gapful number since it is divisible by the number (10) 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 18882080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26635392).

18882080 is an abundant number, since it is smaller than the sum of its proper divisors (34388704).

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

18882080 is a wasteful number, since it uses less digits than its factorization.

18882080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778 (or 770 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 35.

The square root of 18882080 is about 4345.3515392889. The cubic root of 18882080 is about 266.2869874482.

The spelling of 18882080 in words is "eighteen million, eight hundred eighty-two thousand, eighty".

Divisors: 1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 56 70 80 92 112 115 140 160 161 184 224 230 280 322 368 460 560 644 733 736 805 920 1120 1288 1466 1610 1840 2576 2932 3220 3665 3680 5131 5152 5864 6440 7330 10262 11728 12880 14660 16859 20524 23456 25655 25760 29320 33718 41048 51310 58640 67436 82096 84295 102620 117280 118013 134872 164192 168590 205240 236026 269744 337180 410480 472052 539488 590065 674360 820960 944104 1180130 1348720 1888208 2360260 2697440 3776416 4720520 9441040 18882080