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144530 = 2597149
BaseRepresentation
bin100011010010010010
321100020222
4203102102
514111110
63033042
71141241
oct432222
9240228
10144530
1199651
126b782
1350a29
143a958
152cc55
hex23492

144530 has 16 divisors (see below), whose sum is σ = 264600. Its totient is φ = 56832.

The previous prime is 144511. The next prime is 144539. The reversal of 144530 is 35441.

It can be written as a sum of positive squares in 4 ways, for example, as 83521 + 61009 = 289^2 + 247^2 .

It is a nialpdrome in base 8 and base 11.

It is a junction number, because it is equal to n+sod(n) for n = 144499 and 144508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 896 + ... + 1044.

2144530 is an apocalyptic number.

144530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144530 is a deficient number, since it is larger than the sum of its proper divisors (120070).

144530 is a wasteful number, since it uses less digits than its factorization.

144530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 144530 is about 380.1710141502. The cubic root of 144530 is about 52.4790543808.

Adding to 144530 its reverse (35441), we get a palindrome (179971).

The spelling of 144530 in words is "one hundred forty-four thousand, five hundred thirty".

Divisors: 1 2 5 10 97 149 194 298 485 745 970 1490 14453 28906 72265 144530