Search a number
-
+
13918145 = 517915551
BaseRepresentation
bin110101000101…
…111111000001
3222012010002212
4311011333001
512030340040
61214151505
7226205453
oct65057701
928163085
1013918145
1179469aa
1247b2595
132b640b7
141bc42d3
15134dd65
hexd45fc1

13918145 has 8 divisors (see below), whose sum is σ = 16796160. Its totient is φ = 11071600.

The previous prime is 13918139. The next prime is 13918181. The reversal of 13918145 is 54181931.

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

It is not a de Polignac number, because 13918145 - 24 = 13918129 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6881 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (2099520).

Almost surely, 213918145 is an apocalyptic number.

It is an amenable number.

13918145 is a deficient number, since it is larger than the sum of its proper divisors (2878015).

13918145 is a wasteful number, since it uses less digits than its factorization.

13918145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15735.

The product of its digits is 4320, while the sum is 32.

The square root of 13918145 is about 3730.7030168589. The cubic root of 13918145 is about 240.5435884705.

The spelling of 13918145 in words is "thirteen million, nine hundred eighteen thousand, one hundred forty-five".

Divisors: 1 5 179 895 15551 77755 2783629 13918145