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204557470052 = 2213177316319447
BaseRepresentation
bin1011111010000010010…
…0110100100101100100
3201112222221222011002112
42332200210310211210
511322413203020202
6233550012300152
720531060543465
oct2764044644544
9645887864075
10204557470052
11798303a4981
1233789a71658
131639c598210
149c874aad6c
1554c3615b52
hex2fa0934964

204557470052 has 96 divisors (see below), whose sum is σ = 416340916992. Its totient is φ = 87098167296.

The previous prime is 204557470021. The next prime is 204557470057. The reversal of 204557470052 is 250074755402.

It is a junction number, because it is equal to n+sod(n) for n = 204557469991 and 204557470009.

It is not an unprimeable number, because it can be changed into a prime (204557470057) 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, 10508993 + ... + 10528439.

It is an arithmetic number, because the mean of its divisors is an integer number (4336884552).

Almost surely, 2204557470052 is an apocalyptic number.

It is an amenable number.

204557470052 is an abundant number, since it is smaller than the sum of its proper divisors (211783446940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204557470052 is a wasteful number, since it uses less digits than its factorization.

204557470052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19717 (or 19715 counting only the distinct ones).

The product of its (nonzero) digits is 392000, while the sum is 41.

The spelling of 204557470052 in words is "two hundred four billion, five hundred fifty-seven million, four hundred seventy thousand, fifty-two".

Divisors: 1 2 4 13 17 26 34 52 68 73 146 163 221 292 326 442 652 884 949 1241 1898 2119 2482 2771 3796 4238 4964 5542 8476 11084 11899 16133 19447 23798 32266 36023 38894 47596 64532 72046 77788 144092 154687 202283 252811 309374 330599 404566 505622 618748 661198 809132 1011244 1322396 1419631 2629679 2839262 3169861 4297787 5259358 5678524 6339722 8595574 10518716 12679444 17191148 18455203 24133727 36910406 41208193 48267454 53887637 73820812 82416386 96534908 107775274 164832772 215550548 231399853 313738451 462799706 627476902 700539281 925599412 1254953804 1401078562 2802157124 3008198089 3933797501 6016396178 7867595002 12032792356 15735190004 51139367513 102278735026 204557470052