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28255305175 = 5217197347933
BaseRepresentation
bin11010010100001001…
…011011110111010111
32200221011100020000021
4122110021123313113
5430331324231200
620551425130011
72020123063006
oct322411336727
980834306007
1028255305175
1110a8a423a89
125586789907
132883a9a0b6
14152084ac3d
15b0589741a
hex69425bdd7

28255305175 has 48 divisors (see below), whose sum is σ = 39585814560. Its totient is φ = 19878359040.

The previous prime is 28255305157. The next prime is 28255305181. The reversal of 28255305175 is 57150355282.

It is not a de Polignac number, because 28255305175 - 219 = 28254780887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 565509 + ... + 613441.

It is an arithmetic number, because the mean of its divisors is an integer number (824704470).

Almost surely, 228255305175 is an apocalyptic number.

28255305175 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28255305175 is a deficient number, since it is larger than the sum of its proper divisors (11330509385).

28255305175 is a wasteful number, since it uses less digits than its factorization.

28255305175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48052 (or 48047 counting only the distinct ones).

The product of its (nonzero) digits is 420000, while the sum is 43.

The spelling of 28255305175 in words is "twenty-eight billion, two hundred fifty-five million, three hundred five thousand, one hundred seventy-five".

Divisors: 1 5 17 19 25 73 85 95 323 365 425 475 1241 1387 1615 1825 6205 6935 8075 23579 31025 34675 47933 117895 239665 589475 814861 910727 1198325 3499109 4074305 4553635 15482359 17495545 20371525 22768175 59484853 66483071 77411795 87477725 297424265 332415355 387058975 1130212207 1487121325 1662076775 5651061035 28255305175