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220143 = 3711953
BaseRepresentation
bin110101101111101111
3102011222110
4311233233
524021033
64415103
71604550
oct655757
9364873
10220143
11140440
12a7493
1379281
145a327
1545363
hex35bef

220143 has 16 divisors (see below), whose sum is σ = 366336. Its totient is φ = 114240.

The previous prime is 220141. The next prime is 220147. The reversal of 220143 is 341022.

It is not a de Polignac number, because 220143 - 21 = 220141 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246 + ... + 707.

It is an arithmetic number, because the mean of its divisors is an integer number (22896).

2220143 is an apocalyptic number.

220143 is a deficient number, since it is larger than the sum of its proper divisors (146193).

220143 is a wasteful number, since it uses less digits than its factorization.

220143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 220143 is about 469.1939897313. The cubic root of 220143 is about 60.3811842916.

Adding to 220143 its reverse (341022), we get a palindrome (561165).

It can be divided in two parts, 220 and 143, that added together give a palindrome (363).

The spelling of 220143 in words is "two hundred twenty thousand, one hundred forty-three", and thus it is an iban number.

Divisors: 1 3 7 11 21 33 77 231 953 2859 6671 10483 20013 31449 73381 220143