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18514 = 29257
BaseRepresentation
bin100100001010010
3221101201
410201102
51043024
6221414
7104656
oct44122
927351
1018514
1112a01
12a86a
138572
146a66
155744
hex4852

18514 has 4 divisors (see below), whose sum is σ = 27774. Its totient is φ = 9256.

The previous prime is 18503. The next prime is 18517. The reversal of 18514 is 41581.

It can be divided in two parts, 1 and 8514, that added together give a triangular number (8515 = T130).

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41581 = 43967.

It can be written as a sum of positive squares in only one way, i.e., 18225 + 289 = 135^2 + 17^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18491 and 18500.

It is not an unprimeable number, because it can be changed into a prime (18517) by changing a digit.

18514 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4627 + ... + 4630.

218514 is an apocalyptic number.

18514 is a deficient number, since it is larger than the sum of its proper divisors (9260).

18514 is an equidigital number, since it uses as much as digits as its factorization.

18514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259.

The product of its digits is 160, while the sum is 19.

The square root of 18514 is about 136.0661603780. The cubic root of 18514 is about 26.4545322141.

The spelling of 18514 in words is "eighteen thousand, five hundred fourteen".

Divisors: 1 2 9257 18514