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144433 = 971489
BaseRepresentation
bin100011010000110001
321100010101
4203100301
514110213
63032401
71141042
oct432061
9240111
10144433
1199573
126b701
1350983
143a8c9
152cbdd
hex23431

144433 has 4 divisors (see below), whose sum is σ = 146020. Its totient is φ = 142848.

The previous prime is 144427. The next prime is 144439. The reversal of 144433 is 334441.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (144427) and next prime (144439).

It can be written as a sum of positive squares in 2 ways, for example, as 47089 + 97344 = 217^2 + 312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-144433 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 144433.

It is not an unprimeable number, because it can be changed into a prime (144439) 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 3 ways as a sum of consecutive naturals, for example, 648 + ... + 841.

It is an arithmetic number, because the mean of its divisors is an integer number (36505).

2144433 is an apocalyptic number.

It is an amenable number.

144433 is a deficient number, since it is larger than the sum of its proper divisors (1587).

144433 is an equidigital number, since it uses as much as digits as its factorization.

144433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586.

The product of its digits is 576, while the sum is 19.

The square root of 144433 is about 380.0434185721. The cubic root of 144433 is about 52.4673114727.

Adding to 144433 its reverse (334441), we get a palindrome (478874).

The spelling of 144433 in words is "one hundred forty-four thousand, four hundred thirty-three".

Divisors: 1 97 1489 144433