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18142910 = 25171941137
BaseRepresentation
bin100010100110…
…1011010111110
31021010202101122
41011031122332
514121033120
61444510542
7310132532
oct105153276
937122348
1018142910
11a272045
1260ab452
1339b3066
1425a3bc2
1518d5a25
hex114d6be

18142910 has 64 divisors (see below), whose sum is σ = 37558080. Its totient is φ = 6266880.

The previous prime is 18142879. The next prime is 18142919. The reversal of 18142910 is 1924181.

It is a self number, because there is not a number n which added to its sum of digits gives 18142910.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18142919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132362 + ... + 132498.

It is an arithmetic number, because the mean of its divisors is an integer number (586845).

Almost surely, 218142910 is an apocalyptic number.

18142910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18142910 is an abundant number, since it is smaller than the sum of its proper divisors (19415170).

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

18142910 is a wasteful number, since it uses less digits than its factorization.

18142910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 18142910 is about 4259.4494949465. The cubic root of 18142910 is about 262.7658862995.

The spelling of 18142910 in words is "eighteen million, one hundred forty-two thousand, nine hundred ten".

Divisors: 1 2 5 10 17 19 34 38 41 82 85 95 137 170 190 205 274 323 410 646 685 697 779 1370 1394 1558 1615 2329 2603 3230 3485 3895 4658 5206 5617 6970 7790 11234 11645 13015 13243 23290 26030 26486 28085 44251 56170 66215 88502 95489 106723 132430 190978 213446 221255 442510 477445 533615 954890 1067230 1814291 3628582 9071455 18142910