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18107960 = 2351397359
BaseRepresentation
bin100010100010…
…0111000111000
31021001222110012
41011010320320
514113423320
61444041052
7306625613
oct105047070
937058405
1018107960
11a248862
126093188
1339a0190
14259517a
1518ca4c5
hex1144e38

18107960 has 64 divisors (see below), whose sum is σ = 44452800. Its totient is φ = 6598656.

The previous prime is 18107959. The next prime is 18107981. The reversal of 18107960 is 6970181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50261 + ... + 50619.

It is an arithmetic number, because the mean of its divisors is an integer number (694575).

Almost surely, 218107960 is an apocalyptic number.

18107960 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 18107960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22226400).

18107960 is an abundant number, since it is smaller than the sum of its proper divisors (26344840).

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

18107960 is a wasteful number, since it uses less digits than its factorization.

18107960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 476 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 18107960 is about 4255.3448743903. The cubic root of 18107960 is about 262.5970495271.

The spelling of 18107960 in words is "eighteen million, one hundred seven thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 13 20 26 40 52 65 97 104 130 194 260 359 388 485 520 718 776 970 1261 1436 1795 1940 2522 2872 3590 3880 4667 5044 6305 7180 9334 10088 12610 14360 18668 23335 25220 34823 37336 46670 50440 69646 93340 139292 174115 186680 278584 348230 452699 696460 905398 1392920 1810796 2263495 3621592 4526990 9053980 18107960