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28376045020 = 22567193109721
BaseRepresentation
bin11010011011010110…
…000001010111011100
32201020120112102221101
4122123112001113130
5431103231420040
621011421042444
72023120255141
oct323326012734
981216472841
1028376045020
11110415a0684
1255bb0b6424
1328a2ac29ab
1415328ba3c8
15b1129709a
hex69b5815dc

28376045020 has 48 divisors (see below), whose sum is σ = 60793010208. Its totient is φ = 11122974720.

The previous prime is 28376045011. The next prime is 28376045111. The reversal of 28376045020 is 2054067382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203760 + ... + 313480.

It is an arithmetic number, because the mean of its divisors is an integer number (1266521046).

Almost surely, 228376045020 is an apocalyptic number.

28376045020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28376045020 is an abundant number, since it is smaller than the sum of its proper divisors (32416965188).

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

28376045020 is a wasteful number, since it uses less digits than its factorization.

28376045020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109990 (or 109988 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 28376045020 in words is "twenty-eight billion, three hundred seventy-six million, forty-five thousand, twenty".

Divisors: 1 2 4 5 10 20 67 134 193 268 335 386 670 772 965 1340 1930 3860 12931 25862 51724 64655 109721 129310 219442 258620 438884 548605 1097210 2194420 7351307 14702614 21176153 29405228 36756535 42352306 73513070 84704612 105880765 147026140 211761530 423523060 1418802251 2837604502 5675209004 7094011255 14188022510 28376045020