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144205441 = 1773116201
BaseRepresentation
bin10001001100001…
…10011010000001
3101001100101200021
420212012122001
5243404033231
622150453441
73400504012
oct1046063201
9331311607
10144205441
1174444756
1240364281
1323b50583
141521b009
15c9d7811
hex8986681

144205441 has 8 divisors (see below), whose sum is σ = 154781064. Its totient is φ = 133862400.

The previous prime is 144205417. The next prime is 144205463. The reversal of 144205441 is 144502441.

It can be written as a sum of positive squares in 4 ways, for example, as 30569841 + 113635600 = 5529^2 + 10660^2 .

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 144205441 - 25 = 144205409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144205141) 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, 56860 + ... + 59341.

It is an arithmetic number, because the mean of its divisors is an integer number (19347633).

Almost surely, 2144205441 is an apocalyptic number.

It is an amenable number.

144205441 is a deficient number, since it is larger than the sum of its proper divisors (10575623).

144205441 is a wasteful number, since it uses less digits than its factorization.

144205441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116291.

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 144205441 is about 12008.5569907462. The cubic root of 144205441 is about 524.3974232360.

Adding to 144205441 its reverse (144502441), we get a palindrome (288707882).

The spelling of 144205441 in words is "one hundred forty-four million, two hundred five thousand, four hundred forty-one".

Divisors: 1 17 73 1241 116201 1975417 8482673 144205441