Search a number
-
+
18248107 = 19139539
BaseRepresentation
bin100010110011…
…1000110101011
31021100002200211
41011213012223
514132414412
61451041551
7311051323
oct105470653
937302624
1018248107
11a334089
1261402b7
133a1bbc7
1425d0283
151906ca7
hex11671ab

18248107 has 4 divisors (see below), whose sum is σ = 18259560. Its totient is φ = 18236656.

The previous prime is 18248093. The next prime is 18248129. The reversal of 18248107 is 70184281.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70184281 = 71988511.

It is a cyclic number.

It is not a de Polignac number, because 18248107 - 27 = 18247979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18248137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2857 + ... + 6682.

It is an arithmetic number, because the mean of its divisors is an integer number (4564890).

Almost surely, 218248107 is an apocalyptic number.

18248107 is a deficient number, since it is larger than the sum of its proper divisors (11453).

18248107 is an equidigital number, since it uses as much as digits as its factorization.

18248107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11452.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 18248107 is about 4271.7803080215. The cubic root of 18248107 is about 263.2727680329.

The spelling of 18248107 in words is "eighteen million, two hundred forty-eight thousand, one hundred seven".

Divisors: 1 1913 9539 18248107