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52878608260 = 2252890991457
BaseRepresentation
bin110001001111110011…
…111000011110000100
312001111012102121210121
4301033303320132010
51331243410431020
640143032031324
73551244516442
oct611763703604
9161435377717
1052878608260
1120475661045
12a2b8b32544
134ca9260a1a
1427b8b77b92
15159745abaa
hexc4fcf8784

52878608260 has 24 divisors (see below), whose sum is σ = 111050132760. Its totient is φ = 21150480384.

The previous prime is 52878608257. The next prime is 52878608303. The reversal of 52878608260 is 6280687825.

It can be written as a sum of positive squares in 4 ways, for example, as 13426320384 + 39452287876 = 115872^2 + 198626^2 .

It is a super-2 number, since 2×528786082602 (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52878608198 and 52878608207.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 532452 + ... + 623908.

It is an arithmetic number, because the mean of its divisors is an integer number (4627088865).

Almost surely, 252878608260 is an apocalyptic number.

It is an amenable number.

52878608260 is an abundant number, since it is smaller than the sum of its proper divisors (58171524500).

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

52878608260 is a wasteful number, since it uses less digits than its factorization.

52878608260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120375 (or 120373 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 52.

The spelling of 52878608260 in words is "fifty-two billion, eight hundred seventy-eight million, six hundred eight thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 28909 57818 91457 115636 144545 182914 289090 365828 457285 578180 914570 1829140 2643930413 5287860826 10575721652 13219652065 26439304130 52878608260