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80189 = 175389
BaseRepresentation
bin10011100100111101
311001222222
4103210331
510031224
61415125
7452534
oct234475
9131888
1080189
115527a
123a4a5
132a665
142131b
1518b5e
hex1393d

80189 has 8 divisors (see below), whose sum is σ = 87480. Its totient is φ = 73216.

The previous prime is 80177. The next prime is 80191. The reversal of 80189 is 98108.

It can be written as a sum of positive squares in 4 ways, for example, as 17689 + 62500 = 133^2 + 250^2 .

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 80189 - 24 = 80173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80149) 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, 857 + ... + 945.

It is an arithmetic number, because the mean of its divisors is an integer number (10935).

280189 is an apocalyptic number.

80189 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

80189 is a deficient number, since it is larger than the sum of its proper divisors (7291).

80189 is a wasteful number, since it uses less digits than its factorization.

80189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 80189 is about 283.1766233290. The cubic root of 80189 is about 43.1225994603.

It can be divided in two parts, 801 and 89, that multiplied together give a square (71289 = 2672).

The spelling of 80189 in words is "eighty thousand, one hundred eighty-nine".

Divisors: 1 17 53 89 901 1513 4717 80189