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22214143 = 73678647
BaseRepresentation
bin101010010111…
…1010111111111
31112210121002001
41110233113333
521141323033
62112043131
7356550160
oct124572777
945717061
1022214143
11115a28a6
1275334a7
1347aa183
142d43767
151e3be7d
hex152f5ff

22214143 has 8 divisors (see below), whose sum is σ = 25459712. Its totient is φ = 18986616.

The previous prime is 22214131. The next prime is 22214147. The reversal of 22214143 is 34141222.

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 22214143 - 25 = 22214111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22214143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22214147) 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, 1755 + ... + 6892.

It is an arithmetic number, because the mean of its divisors is an integer number (3182464).

Almost surely, 222214143 is an apocalyptic number.

22214143 is a deficient number, since it is larger than the sum of its proper divisors (3245569).

22214143 is an equidigital number, since it uses as much as digits as its factorization.

22214143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9021.

The product of its digits is 384, while the sum is 19.

The square root of 22214143 is about 4713.1881990856. The cubic root of 22214143 is about 281.1101462377.

Adding to 22214143 its reverse (34141222), we get a palindrome (56355365).

It can be divided in two parts, 222 and 14143, that added together give a triangular number (14365 = T169).

The spelling of 22214143 in words is "twenty-two million, two hundred fourteen thousand, one hundred forty-three".

Divisors: 1 7 367 2569 8647 60529 3173449 22214143