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83881 = 723521
BaseRepresentation
bin10100011110101001
311021001201
4110132221
510141011
61444201
7466360
oct243651
9137051
1083881
1158026
1240661
132c245
14227d7
1519cc1
hex147a9

83881 has 8 divisors (see below), whose sum is σ = 100224. Its totient is φ = 68640.

The previous prime is 83873. The next prime is 83891. The reversal of 83881 is 18838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83881 - 23 = 83873 is a prime.

It is a super-2 number, since 2×838812 = 14072044322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100 + ... + 421.

It is an arithmetic number, because the mean of its divisors is an integer number (12528).

283881 is an apocalyptic number.

It is an amenable number.

83881 is a deficient number, since it is larger than the sum of its proper divisors (16343).

83881 is a wasteful number, since it uses less digits than its factorization.

83881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its digits is 1536, while the sum is 28.

The square root of 83881 is about 289.6221676599. The cubic root of 83881 is about 43.7745005625.

It can be divided in two parts, 838 and 81, that added together give a palindrome (919).

The spelling of 83881 in words is "eighty-three thousand, eight hundred eighty-one".

Divisors: 1 7 23 161 521 3647 11983 83881