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83841 = 327947
BaseRepresentation
bin10100011110000001
311021000020
4110132001
510140331
61444053
7466302
oct243601
9137006
1083841
1157a9a
1240629
132c214
14227a9
1519c96
hex14781

83841 has 4 divisors (see below), whose sum is σ = 111792. Its totient is φ = 55892.

The previous prime is 83833. The next prime is 83843. The reversal of 83841 is 14838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83841 - 23 = 83833 is a prime.

It is a D-number.

It is a Curzon number.

83841 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (83843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13971 + ... + 13976.

It is an arithmetic number, because the mean of its divisors is an integer number (27948).

283841 is an apocalyptic number.

It is an amenable number.

83841 is a deficient number, since it is larger than the sum of its proper divisors (27951).

83841 is a wasteful number, since it uses less digits than its factorization.

83841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27950.

The product of its digits is 768, while the sum is 24.

The square root of 83841 is about 289.5531039378. The cubic root of 83841 is about 43.7675412653.

It can be divided in two parts, 8384 and 1, that added together give a triangular number (8385 = T129).

The spelling of 83841 in words is "eighty-three thousand, eight hundred forty-one".

Divisors: 1 3 27947 83841