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20068130828 = 221719109142501
BaseRepresentation
bin10010101100001001…
…110110000000001100
31220210120201200011202
4102230021312000030
5312044420141303
613115201405032
71310210204024
oct225411660014
956716650152
1020068130828
118568a33799
123a80939778
131b7a840735
14d8537ca84
157c6c27c88
hex4ac27600c

20068130828 has 48 divisors (see below), whose sum is σ = 39501554400. Its totient is φ = 8864640000.

The previous prime is 20068130827. The next prime is 20068130833. The reversal of 20068130828 is 82803186002.

It is a super-3 number, since 3×200681308283 (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 20068130791 and 20068130800.

It is not an unprimeable number, because it can be changed into a prime (20068130827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69578 + ... + 212078.

It is an arithmetic number, because the mean of its divisors is an integer number (822949050).

Almost surely, 220068130828 is an apocalyptic number.

It is an amenable number.

20068130828 is a deficient number, since it is larger than the sum of its proper divisors (19433423572).

20068130828 is a wasteful number, since it uses less digits than its factorization.

20068130828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142650 (or 142648 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 20068130828 in words is "twenty billion, sixty-eight million, one hundred thirty thousand, eight hundred twenty-eight".

Divisors: 1 2 4 17 19 34 38 68 76 109 218 323 436 646 1292 1853 2071 3706 4142 7412 8284 35207 70414 140828 142501 285002 570004 2422517 2707519 4845034 5415038 9690068 10830076 15532609 31065218 46027823 62130436 92055646 184111292 264054353 295119571 528108706 590239142 1056217412 1180478284 5017032707 10034065414 20068130828