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83239 = 1319337
BaseRepresentation
bin10100010100100111
311020011221
4110110213
510130424
61441211
7464452
oct242447
9136157
1083239
11575a2
1240207
132bb70
1422499
15199e4
hex14527

83239 has 8 divisors (see below), whose sum is σ = 94640. Its totient is φ = 72576.

The previous prime is 83233. The next prime is 83243. The reversal of 83239 is 93238.

83239 = 272 + 282 + ... + 642.

It is a happy number.

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 83239 - 23 = 83231 is a prime.

It is a super-2 number, since 2×832392 = 13857462242, which contains 22 as substring.

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 (83231) 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, 79 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (11830).

283239 is an apocalyptic number.

83239 is a deficient number, since it is larger than the sum of its proper divisors (11401).

83239 is a wasteful number, since it uses less digits than its factorization.

83239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its digits is 1296, while the sum is 25.

The square root of 83239 is about 288.5116982030. The cubic root of 83239 is about 43.6625354624.

Subtracting 83239 from its reverse (93238), we obtain a palindrome (9999).

The spelling of 83239 in words is "eighty-three thousand, two hundred thirty-nine".

Divisors: 1 13 19 247 337 4381 6403 83239