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683869252 = 221121937321
BaseRepresentation
bin101000110000110…
…000010001000100
31202122211011020211
4220300300101010
52400032304002
6151505405204
722642535623
oct5060602104
91678734224
10683869252
11321032100
12171039804
13ab8b2181
1466b796ba
1540087dd7
hex28c30444

683869252 has 36 divisors (see below), whose sum is σ = 1322455708. Its totient is φ = 309196800.

The previous prime is 683869247. The next prime is 683869253. The reversal of 683869252 is 252968386.

It can be written as a sum of positive squares in 2 ways, for example, as 47114496 + 636754756 = 6864^2 + 25234^2 .

It is a junction number, because it is equal to n+sod(n) for n = 683869196 and 683869205.

It is not an unprimeable number, because it can be changed into a prime (683869253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89752 + ... + 97072.

Almost surely, 2683869252 is an apocalyptic number.

It is an amenable number.

683869252 is a deficient number, since it is larger than the sum of its proper divisors (638586456).

683869252 is a wasteful number, since it uses less digits than its factorization.

683869252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540 (or 7527 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 683869252 is about 26150.8939044156. The cubic root of 683869252 is about 881.0306673977.

The spelling of 683869252 in words is "six hundred eighty-three million, eight hundred sixty-nine thousand, two hundred fifty-two".

Divisors: 1 2 4 11 22 44 121 193 242 386 484 772 2123 4246 7321 8492 14642 23353 29284 46706 80531 93412 161062 322124 885841 1412953 1771682 2825906 3543364 5651812 15542483 31084966 62169932 170967313 341934626 683869252