Search a number
-
+
2214143 = 14871489
BaseRepresentation
bin1000011100100011111111
311011111020022
420130203333
51031323033
6115242355
724551141
oct10344377
94144208
102214143
111282578
128a93bb
135c6a59
14418c91
152db098
hex21c8ff

2214143 has 4 divisors (see below), whose sum is σ = 2217120. Its totient is φ = 2211168.

The previous prime is 2214137. The next prime is 2214161. The reversal of 2214143 is 3414122.

It is a Cunningham number, because it is equal to 14882-1.

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.

It is a cyclic number.

It is not a de Polignac number, because 2214143 - 214 = 2197759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2214103) 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, 743 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (554280).

22214143 is an apocalyptic number.

2214143 is a deficient number, since it is larger than the sum of its proper divisors (2977).

2214143 is a wasteful number, since it uses less digits than its factorization.

2214143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2976.

The product of its digits is 192, while the sum is 17.

The square root of 2214143 is about 1487.9996639785. Note that the first 3 decimals coincide. The cubic root of 2214143 is about 130.3372505689.

Adding to 2214143 its reverse (3414122), we get a palindrome (5628265).

The spelling of 2214143 in words is "two million, two hundred fourteen thousand, one hundred forty-three".

Divisors: 1 1487 1489 2214143