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28110432441 = 3713437332803
BaseRepresentation
bin11010001011100000…
…110010100010111001
32200120001201220222110
4122023200302202321
5430032232314231
620525212042533
72013413506350
oct321340624271
980501656873
1028110432441
1110a15673a53
125546163449
13285ca74ba0
1415094d8997
15ae7ccc046
hex68b8328b9

28110432441 has 64 divisors (see below), whose sum is σ = 47850801152. Its totient is φ = 14283827712.

The previous prime is 28110432407. The next prime is 28110432479. The reversal of 28110432441 is 14423401182.

It is not a de Polignac number, because 28110432441 - 26 = 28110432377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28110432399 and 28110432408.

It is not an unprimeable number, because it can be changed into a prime (28110432641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 840546 + ... + 873348.

It is an arithmetic number, because the mean of its divisors is an integer number (747668768).

Almost surely, 228110432441 is an apocalyptic number.

28110432441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28110432441 is a deficient number, since it is larger than the sum of its proper divisors (19740368711).

28110432441 is a wasteful number, since it uses less digits than its factorization.

28110432441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32942.

The product of its (nonzero) digits is 6144, while the sum is 30.

The spelling of 28110432441 in words is "twenty-eight billion, one hundred ten million, four hundred thirty-two thousand, four hundred forty-one".

Divisors: 1 3 7 13 21 39 43 73 91 129 219 273 301 511 559 903 949 1533 1677 2847 3139 3913 6643 9417 11739 19929 21973 32803 40807 65919 98409 122421 229621 285649 426439 688863 856947 1279317 1410529 2394619 2985073 4231587 7183857 8955219 9873703 16762333 18336877 29621109 31130047 50286999 55010631 93390141 102968617 128358139 217910329 308905851 385074417 653730987 720780319 1338592021 2162340957 4015776063 9370144147 28110432441