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144622223 = 3144310531
BaseRepresentation
bin10001001111011…
…00001010001111
3101002010120101122
420213230022033
5244010402343
622203431155
73404161064
oct1047541217
9332116348
10144622223
11746a98a9
12405254bb
1323c681a5
14152c8c6b
15ca6b068
hex89ec28f

144622223 has 8 divisors (see below), whose sum is σ = 149638656. Its totient is φ = 139627800.

The previous prime is 144622193. The next prime is 144622237. The reversal of 144622223 is 322226441.

It is a happy number.

144622223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 144622223 - 210 = 144621199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144622192 and 144622201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144622253) 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, 8468 + ... + 18998.

It is an arithmetic number, because the mean of its divisors is an integer number (18704832).

Almost surely, 2144622223 is an apocalyptic number.

144622223 is a deficient number, since it is larger than the sum of its proper divisors (5016433).

144622223 is a wasteful number, since it uses less digits than its factorization.

144622223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005.

The product of its digits is 4608, while the sum is 26.

The square root of 144622223 is about 12025.8980122068. The cubic root of 144622223 is about 524.9021410953.

Adding to 144622223 its reverse (322226441), we get a palindrome (466848664).

The spelling of 144622223 in words is "one hundred forty-four million, six hundred twenty-two thousand, two hundred twenty-three".

Divisors: 1 31 443 10531 13733 326461 4665233 144622223