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83279 = 711897
BaseRepresentation
bin10100010101001111
311020020102
4110111033
510131104
61441315
7464540
oct242517
9136212
1083279
1157629
124023b
132bba1
14224c7
1519a1e
hex1454f

83279 has 4 divisors (see below), whose sum is σ = 95184. Its totient is φ = 71376.

The previous prime is 83273. The next prime is 83299. The reversal of 83279 is 97238.

83279 = T102 + T103 + ... + T115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97238 = 248619.

It is a cyclic number.

It is not a de Polignac number, because 83279 - 28 = 83023 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5942 + ... + 5955.

It is an arithmetic number, because the mean of its divisors is an integer number (23796).

283279 is an apocalyptic number.

83279 is a deficient number, since it is larger than the sum of its proper divisors (11905).

83279 is a wasteful number, since it uses less digits than its factorization.

83279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11904.

The product of its digits is 3024, while the sum is 29.

The square root of 83279 is about 288.5810111563. The cubic root of 83279 is about 43.6695282652.

The spelling of 83279 in words is "eighty-three thousand, two hundred seventy-nine".

Divisors: 1 7 11897 83279