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83420 = 2254397
BaseRepresentation
bin10100010111011100
311020102122
4110113130
510132140
61442112
7465131
oct242734
9136378
1083420
1157747
1240338
132bc7c
1422588
1519ab5
hex145dc

83420 has 24 divisors (see below), whose sum is σ = 181104. Its totient is φ = 32256.

The previous prime is 83417. The next prime is 83423. The reversal of 83420 is 2438.

It is an interprime number because it is at equal distance from previous prime (83417) and next prime (83423).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83423) 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, 812 + ... + 908.

It is an arithmetic number, because the mean of its divisors is an integer number (7546).

283420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90552).

83420 is an abundant number, since it is smaller than the sum of its proper divisors (97684).

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

83420 is a wasteful number, since it uses less digits than its factorization.

83420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 83420 is about 288.8252066562. The cubic root of 83420 is about 43.6941600520.

Adding to 83420 its reverse (2438), we get a palindrome (85858).

The spelling of 83420 in words is "eighty-three thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 43 86 97 172 194 215 388 430 485 860 970 1940 4171 8342 16684 20855 41710 83420