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102843 = 3313293
BaseRepresentation
bin11001000110111011
312020002000
4121012323
511242333
62112043
7605556
oct310673
9166060
10102843
11702a4
124b623
1337a70
142969d
1520713
hex191bb

102843 has 16 divisors (see below), whose sum is σ = 164640. Its totient is φ = 63072.

The previous prime is 102841. The next prime is 102859. The reversal of 102843 is 348201.

It is a happy number.

102843 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is not a de Polignac number, because 102843 - 21 = 102841 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102843.

It is not an unprimeable number, because it can be changed into a prime (102841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205 + ... + 497.

It is an arithmetic number, because the mean of its divisors is an integer number (10290).

2102843 is an apocalyptic number.

102843 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

102843 is a deficient number, since it is larger than the sum of its proper divisors (61797).

102843 is a wasteful number, since it uses less digits than its factorization.

102843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102843 is about 320.6914404845. The cubic root of 102843 is about 46.8516523729.

The spelling of 102843 in words is "one hundred two thousand, eight hundred forty-three".

Divisors: 1 3 9 13 27 39 117 293 351 879 2637 3809 7911 11427 34281 102843