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195507650 = 252132171361
BaseRepresentation
bin10111010011100…
…11010111000010
3111121212211002002
423221303113002
5400022221100
631222224002
74562534102
oct1351632702
9447784062
10195507650
11a03a4878
1255585002
1331673600
141bd73202
151226d2d5
hexba735c2

195507650 has 72 divisors (see below), whose sum is σ = 417237804. Its totient is φ = 67891200.

The previous prime is 195507643. The next prime is 195507677. The reversal of 195507650 is 56705591.

It can be written as a sum of positive squares in 18 ways, for example, as 56055169 + 139452481 = 7487^2 + 11809^2 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 142970 + ... + 144330.

Almost surely, 2195507650 is an apocalyptic number.

195507650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

195507650 is an abundant number, since it is smaller than the sum of its proper divisors (221730154).

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

195507650 is a wasteful number, since it uses less digits than its factorization.

195507650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 47250, while the sum is 38.

The square root of 195507650 is about 13982.4050148749. The cubic root of 195507650 is about 580.3917785043.

The spelling of 195507650 in words is "one hundred ninety-five million, five hundred seven thousand, six hundred fifty".

Divisors: 1 2 5 10 13 17 25 26 34 50 65 85 130 169 170 221 325 338 425 442 650 845 850 1105 1361 1690 2210 2722 2873 4225 5525 5746 6805 8450 11050 13610 14365 17693 23137 28730 34025 35386 46274 68050 71825 88465 115685 143650 176930 230009 231370 300781 442325 460018 578425 601562 884650 1150045 1156850 1503905 2300090 3007810 3910153 5750225 7519525 7820306 11500450 15039050 19550765 39101530 97753825 195507650