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79285 = 5101157
BaseRepresentation
bin10011010110110101
311000202111
4103112311
510014120
61411021
7450103
oct232665
9130674
1079285
1154628
1239a71
132a11b
1420c73
151875a
hex135b5

79285 has 8 divisors (see below), whose sum is σ = 96696. Its totient is φ = 62400.

The previous prime is 79283. The next prime is 79301. The reversal of 79285 is 58297.

It can be written as a sum of positive squares in 4 ways, for example, as 18769 + 60516 = 137^2 + 246^2 .

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

It is not a de Polignac number, because 79285 - 21 = 79283 is a prime.

It is a super-2 number, since 2×792852 = 12572222450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79283) 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, 427 + ... + 583.

It is an arithmetic number, because the mean of its divisors is an integer number (12087).

279285 is an apocalyptic number.

It is an amenable number.

79285 is a deficient number, since it is larger than the sum of its proper divisors (17411).

79285 is a wasteful number, since it uses less digits than its factorization.

79285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263.

The product of its digits is 5040, while the sum is 31.

The square root of 79285 is about 281.5759222661. The cubic root of 79285 is about 42.9599410592.

The spelling of 79285 in words is "seventy-nine thousand, two hundred eighty-five".

Divisors: 1 5 101 157 505 785 15857 79285