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144022433 = 779318481
BaseRepresentation
bin10001001010110…
…01101110100001
3101001000002122012
420211121232201
5243332204213
622142522305
73366112322
oct1045315641
9331002565
10144022433
117432a205
1240296395
1323ab8199
14151b0449
15c99d4a8
hex8959ba1

144022433 has 4 divisors (see below), whose sum is σ = 144048708. Its totient is φ = 143996160.

The previous prime is 144022427. The next prime is 144022457. The reversal of 144022433 is 334220441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 334220441 = 2063162007.

It can be written as a sum of positive squares in 2 ways, for example, as 138485824 + 5536609 = 11768^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 144022433 - 26 = 144022369 is a prime.

It is a super-2 number, since 2×1440224332 = 41484922414478978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144022399 and 144022408.

It is not an unprimeable number, because it can be changed into a prime (144022423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (36012177).

Almost surely, 2144022433 is an apocalyptic number.

It is an amenable number.

144022433 is a deficient number, since it is larger than the sum of its proper divisors (26275).

144022433 is an equidigital number, since it uses as much as digits as its factorization.

144022433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26274.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 144022433 is about 12000.9346719328. The cubic root of 144022433 is about 524.1754955265.

Adding to 144022433 its reverse (334220441), we get a palindrome (478242874).

The spelling of 144022433 in words is "one hundred forty-four million, twenty-two thousand, four hundred thirty-three".

Divisors: 1 7793 18481 144022433