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512444413 = 131729372161
BaseRepresentation
bin11110100010110…
…100011111111101
31022201020212120201
4132202310133331
52022141210123
6122503243501
715461464015
oct3642643775
91281225521
10512444413
11243297088
12123749591
1382221460
144c0b4c45
152eec55ad
hex1e8b47fd

512444413 has 32 divisors (see below), whose sum is σ = 621099360. Its totient is φ = 418037760.

The previous prime is 512444381. The next prime is 512444423. The reversal of 512444413 is 314444215.

It can be written as a sum of positive squares in 16 ways, for example, as 9474084 + 502970329 = 3078^2 + 22427^2 .

It is a cyclic number.

It is not a de Polignac number, because 512444413 - 25 = 512444381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512444423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236053 + ... + 238213.

It is an arithmetic number, because the mean of its divisors is an integer number (19409355).

Almost surely, 2512444413 is an apocalyptic number.

It is an amenable number.

512444413 is a deficient number, since it is larger than the sum of its proper divisors (108654947).

512444413 is a wasteful number, since it uses less digits than its factorization.

512444413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2257.

The product of its digits is 7680, while the sum is 28.

The square root of 512444413 is about 22637.2351006036. The cubic root of 512444413 is about 800.2313981663.

Adding to 512444413 its reverse (314444215), we get a palindrome (826888628).

The spelling of 512444413 in words is "five hundred twelve million, four hundred forty-four thousand, four hundred thirteen".

Divisors: 1 13 17 29 37 221 377 481 493 629 1073 2161 6409 8177 13949 18241 28093 36737 62669 79957 237133 477581 814697 1039441 1065373 1359269 2318753 13849849 17670497 30143789 39418801 512444413