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143226 = 23273109
BaseRepresentation
bin100010111101111010
321021110200
4202331322
514040401
63023030
71134366
oct427572
9237420
10143226
1198676
126aa76
1350265
143a2a6
152c686
hex22f7a

143226 has 24 divisors (see below), whose sum is σ = 317460. Its totient is φ = 46656.

The previous prime is 143197. The next prime is 143239. The reversal of 143226 is 622341.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140625 + 2601 = 375^2 + 51^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 143199 and 143208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1260 + ... + 1368.

2143226 is an apocalyptic number.

143226 is an abundant number, since it is smaller than the sum of its proper divisors (174234).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143226 is a wasteful number, since it uses less digits than its factorization.

143226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 187 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 143226 is about 378.4521105768. The cubic root of 143226 is about 52.3207492247.

Adding to 143226 its reverse (622341), we get a palindrome (765567).

It can be divided in two parts, 14 and 3226, that added together give a triangular number (3240 = T80).

The spelling of 143226 in words is "one hundred forty-three thousand, two hundred twenty-six".

Divisors: 1 2 3 6 9 18 73 109 146 218 219 327 438 654 657 981 1314 1962 7957 15914 23871 47742 71613 143226