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18052860 = 2235753811
BaseRepresentation
bin100010011011…
…1011011111100
31020222011212110
41010313123330
514110142420
61442534020
7306306150
oct104673374
936864773
1018052860
11a210421
126067310
133981087
14257d060
1518b8ee0
hex11376fc

18052860 has 96 divisors (see below), whose sum is σ = 58931712. Its totient is φ = 4043520.

The previous prime is 18052829. The next prime is 18052873. The reversal of 18052860 is 6825081.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21855 + ... + 22665.

It is an arithmetic number, because the mean of its divisors is an integer number (613872).

Almost surely, 218052860 is an apocalyptic number.

18052860 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 18052860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29465856).

18052860 is an abundant number, since it is smaller than the sum of its proper divisors (40878852).

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

18052860 is a wasteful number, since it uses less digits than its factorization.

18052860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18052860 is about 4248.8657309922. The cubic root of 18052860 is about 262.3304301674.

The spelling of 18052860 in words is "eighteen million, fifty-two thousand, eight hundred sixty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 53 60 70 84 105 106 140 159 210 212 265 318 371 420 530 636 742 795 811 1060 1113 1484 1590 1622 1855 2226 2433 3180 3244 3710 4055 4452 4866 5565 5677 7420 8110 9732 11130 11354 12165 16220 17031 22260 22708 24330 28385 34062 42983 48660 56770 68124 85155 85966 113540 128949 170310 171932 214915 257898 300881 340620 429830 515796 601762 644745 859660 902643 1203524 1289490 1504405 1805286 2578980 3008810 3610572 4513215 6017620 9026430 18052860