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18074241 = 323754277
BaseRepresentation
bin100010011110…
…0101010000001
31021000021012100
41010330222001
514111333431
61443221013
7306425403
oct104745201
937007170
1018074241
11a225499
126077769
13398aa23
142586b73
1518c04e6
hex113ca81

18074241 has 12 divisors (see below), whose sum is σ = 26813332. Its totient is φ = 11723616.

The previous prime is 18074227. The next prime is 18074249. The reversal of 18074241 is 14247081.

It can be written as a sum of positive squares in 2 ways, for example, as 9641025 + 8433216 = 3105^2 + 2904^2 .

It is not a de Polignac number, because 18074241 - 29 = 18073729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18074249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26806 + ... + 27471.

Almost surely, 218074241 is an apocalyptic number.

It is an amenable number.

18074241 is a deficient number, since it is larger than the sum of its proper divisors (8739091).

18074241 is a wasteful number, since it uses less digits than its factorization.

18074241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54320 (or 54317 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 18074241 is about 4251.3810697231. The cubic root of 18074241 is about 262.4339534517.

The spelling of 18074241 in words is "eighteen million, seventy-four thousand, two hundred forty-one".

Divisors: 1 3 9 37 111 333 54277 162831 488493 2008249 6024747 18074241