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28873171974 = 23711031096037
BaseRepresentation
bin11010111000111110…
…011010010000000110
32202112012222002220210
4122320332122100012
5433113013000344
621133020140250
72041334624643
oct327076322006
982465862823
1028873171974
11112771754a9
125719697686
132951ab015a
14157c924dca
15b3ec43db9
hex6b8f9a406

28873171974 has 64 divisors (see below), whose sum is σ = 59680558080. Its totient is φ = 9308960640.

The previous prime is 28873171973. The next prime is 28873171979. The reversal of 28873171974 is 47917137882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873171973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4779684 + ... + 4785720.

It is an arithmetic number, because the mean of its divisors is an integer number (932508720).

Almost surely, 228873171974 is an apocalyptic number.

28873171974 is an abundant number, since it is smaller than the sum of its proper divisors (30807386106).

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

28873171974 is a wasteful number, since it uses less digits than its factorization.

28873171974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6325.

The product of its digits is 4741632, while the sum is 57.

The spelling of 28873171974 in words is "twenty-eight billion, eight hundred seventy-three million, one hundred seventy-one thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 71 103 109 142 206 213 218 309 327 426 618 654 6037 7313 7739 11227 12074 14626 15478 18111 21939 22454 23217 33681 36222 43878 46434 67362 428627 621811 658033 797117 857254 1243622 1285881 1316066 1594234 1865433 1974099 2391351 2571762 3730866 3948198 4782702 44148581 46720343 67777399 88297162 93440686 132445743 135554798 140161029 203332197 264891486 280322058 406664394 4812195329 9624390658 14436585987 28873171974