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30305642341908 = 22331216137698649
BaseRepresentation
bin1101110010000000101010…
…00010111110011000010100
310222022012011022200110020110
412321000111002332120110
512433011423414420113
6144242115255203020
76245340032416143
oct671002502763024
9128265138613213
1030305642341908
11972460704333a
12349552a376470
1313baa6b1cbabb
1476ab2d9d975a
153784bc9c2bc3
hex1b90150be614

30305642341908 has 48 divisors (see below), whose sum is σ = 73028015244800. Its totient is φ = 9771489561600.

The previous prime is 30305642341907. The next prime is 30305642341951. The reversal of 30305642341908 is 80914324650303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30305642341907) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 18045433 + ... + 19653216.

Almost surely, 230305642341908 is an apocalyptic number.

It is an amenable number.

30305642341908 is an abundant number, since it is smaller than the sum of its proper divisors (42722372902892).

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

30305642341908 is a wasteful number, since it uses less digits than its factorization.

30305642341908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37700848 (or 37700846 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 30305642341908 in words is "thirty trillion, three hundred five billion, six hundred forty-two million, three hundred forty-one thousand, nine hundred eight".

Divisors: 1 2 3 4 6 12 31 62 93 124 186 372 2161 4322 6483 8644 12966 25932 66991 133982 200973 267964 401946 803892 37698649 75397298 113095947 150794596 226191894 452383788 1168658119 2337316238 3505974357 4674632476 7011948714 14023897428 81466780489 162933560978 244400341467 325867121956 488800682934 977601365868 2525470195159 5050940390318 7576410585477 10101880780636 15152821170954 30305642341908