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18129102 = 234217177
BaseRepresentation
bin100010100101…
…0000011001110
31021010001110020
41011022003032
514120112402
61444323010
7310044345
oct105120316
937101406
1018129102
11a262732
1260a3466
1339a99a4
14259cb5c
1518d18bc
hex114a0ce

18129102 has 16 divisors (see below), whose sum is σ = 36349392. Its totient is φ = 6027840.

The previous prime is 18129091. The next prime is 18129103. The reversal of 18129102 is 20192181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18129103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063 + ... + 6114.

It is an arithmetic number, because the mean of its divisors is an integer number (2271837).

Almost surely, 218129102 is an apocalyptic number.

18129102 is an abundant number, since it is smaller than the sum of its proper divisors (18220290).

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

18129102 is a wasteful number, since it uses less digits than its factorization.

18129102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 18129102 is about 4257.8283196954. The cubic root of 18129102 is about 262.6992084218.

The spelling of 18129102 in words is "eighteen million, one hundred twenty-nine thousand, one hundred two".

Divisors: 1 2 3 6 421 842 1263 2526 7177 14354 21531 43062 3021517 6043034 9064551 18129102