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244444145 = 51131307467
BaseRepresentation
bin11101001000111…
…10101111110001
3122000222001022212
432210132233301
51000034203040
640131141505
76025512101
oct1644365761
9560861285
10244444145
11115a89560
1269a44895
133b84890a
1424671201
15166d7d65
hexe91ebf1

244444145 has 32 divisors (see below), whose sum is σ = 332107776. Its totient is φ = 171115200.

The previous prime is 244444127. The next prime is 244444147. The reversal of 244444145 is 541444442.

It is not a de Polignac number, because 244444145 - 28 = 244443889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (244444147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523202 + ... + 523668.

It is an arithmetic number, because the mean of its divisors is an integer number (10378368).

Almost surely, 2244444145 is an apocalyptic number.

It is an amenable number.

244444145 is a deficient number, since it is larger than the sum of its proper divisors (87663631).

244444145 is a wasteful number, since it uses less digits than its factorization.

244444145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821.

The product of its digits is 40960, while the sum is 32.

The square root of 244444145 is about 15634.7096231430. The cubic root of 244444145 is about 625.2588964747.

Adding to 244444145 its reverse (541444442), we get a palindrome (785888587).

The spelling of 244444145 in words is "two hundred forty-four million, four hundred forty-four thousand, one hundred forty-five".

Divisors: 1 5 11 31 55 155 307 341 467 1535 1705 2335 3377 5137 9517 14477 16885 25685 47585 72385 104687 143369 159247 523435 716845 796235 1577059 4444439 7885295 22222195 48888829 244444145