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52880221312 = 271932578329
BaseRepresentation
bin110001001111111010…
…000010010010000000
312001111022110120111021
4301033322002102000
51331244314040222
640143130355224
73551264315302
oct611772022200
9161438416437
1052880221312
1120476562a46
12a2b958bb14
134ca96a6ca9
1427b9077972
151597678ac7
hexc4fe82480

52880221312 has 64 divisors (see below), whose sum is σ = 106317955800. Its totient is φ = 26197622784.

The previous prime is 52880221309. The next prime is 52880221319. The reversal of 52880221312 is 21312208825.

It can be written as a sum of positive squares in 4 ways, for example, as 44426522176 + 8453699136 = 210776^2 + 91944^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (52880221319) 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, 6344764 + ... + 6353092.

Almost surely, 252880221312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52880221312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53158977900).

52880221312 is an abundant number, since it is smaller than the sum of its proper divisors (53437734488).

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

52880221312 is a wasteful number, since it uses less digits than its factorization.

52880221312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8793 (or 8781 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 52880221312 in words is "fifty-two billion, eight hundred eighty million, two hundred twenty-one thousand, three hundred twelve".

Divisors: 1 2 4 8 16 32 64 128 193 257 386 514 772 1028 1544 2056 3088 4112 6176 8224 8329 12352 16448 16658 24704 32896 33316 49601 66632 99202 133264 198404 266528 396808 533056 793616 1066112 1587232 1607497 2140553 3174464 3214994 4281106 6348928 6429988 8562212 12859976 17124424 25719952 34248848 51439904 68497696 102879808 136995392 205759616 273990784 413126729 826253458 1652506916 3305013832 6610027664 13220055328 26440110656 52880221312