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18236041 = 294311459
BaseRepresentation
bin100010110010…
…0001010001001
31021022111010221
41011210022021
514132023131
61450510041
7311001205
oct105441211
937274127
1018236041
11a32600a
126135321
133a16575
1425c9b05
151903411
hex1164289

18236041 has 8 divisors (see below), whose sum is σ = 18921600. Its totient is φ = 17554320.

The previous prime is 18236017. The next prime is 18236063. The reversal of 18236041 is 14063281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18236041 - 213 = 18227849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18235997 and 18236015.

It is not an unprimeable number, because it can be changed into a prime (18236741) 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, 11770 + ... + 13228.

It is an arithmetic number, because the mean of its divisors is an integer number (2365200).

Almost surely, 218236041 is an apocalyptic number.

It is an amenable number.

18236041 is a deficient number, since it is larger than the sum of its proper divisors (685559).

18236041 is a wasteful number, since it uses less digits than its factorization.

18236041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18236041 is about 4270.3677827560. The cubic root of 18236041 is about 263.2147282295.

The spelling of 18236041 in words is "eighteen million, two hundred thirty-six thousand, forty-one".

Divisors: 1 29 431 1459 12499 42311 628829 18236041