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18148 = 2213349
BaseRepresentation
bin100011011100100
3220220011
410123210
51040043
6220004
7103624
oct43344
926804
1018148
11126a9
12a604
138350
146884
15559d
hex46e4

18148 has 12 divisors (see below), whose sum is σ = 34300. Its totient is φ = 8352.

The previous prime is 18143. The next prime is 18149. The reversal of 18148 is 84181.

18148 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 7744 + 10404 = 88^2 + 102^2 .

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a house number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (18143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123 + ... + 226.

218148 is an apocalyptic number.

It is an amenable number.

18148 is a deficient number, since it is larger than the sum of its proper divisors (16152).

18148 is a wasteful number, since it uses less digits than its factorization.

18148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 364 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

The square root of 18148 is about 134.7145129524. The cubic root of 18148 is about 26.2790457024.

The spelling of 18148 in words is "eighteen thousand, one hundred forty-eight".

Divisors: 1 2 4 13 26 52 349 698 1396 4537 9074 18148