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2222143 = 71128859
BaseRepresentation
bin1000011110100000111111
311011220012121
420132200333
51032102033
6115343411
724613360
oct10364077
94156177
102222143
111288590
128b1b67
135ca5a1
1441bb67
152dd62d
hex21e83f

2222143 has 8 divisors (see below), whose sum is σ = 2770560. Its totient is φ = 1731480.

The previous prime is 2222141. The next prime is 2222147. The reversal of 2222143 is 3412222.

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

It is a cyclic number.

It is not a de Polignac number, because 2222143 - 21 = 2222141 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 (2222141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14353 + ... + 14506.

It is an arithmetic number, because the mean of its divisors is an integer number (346320).

22222143 is an apocalyptic number.

2222143 is a deficient number, since it is larger than the sum of its proper divisors (548417).

2222143 is a wasteful number, since it uses less digits than its factorization.

2222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28877.

The product of its digits is 192, while the sum is 16.

The square root of 2222143 is about 1490.6854128219. The cubic root of 2222143 is about 130.4940372980.

Adding to 2222143 its reverse (3412222), we get a palindrome (5634365).

The spelling of 2222143 in words is "two million, two hundred twenty-two thousand, one hundred forty-three".

Divisors: 1 7 11 77 28859 202013 317449 2222143