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189308 = 2276761
BaseRepresentation
bin101110001101111100
3100121200102
4232031330
522024213
64020232
71415630
oct561574
9317612
10189308
1111a259
1291678
1368222
144cdc0
153b158
hex2e37c

189308 has 12 divisors (see below), whose sum is σ = 378672. Its totient is φ = 81120.

The previous prime is 189307. The next prime is 189311. The reversal of 189308 is 803981.

It is a happy number.

189308 is an admirable number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3353 + ... + 3408.

It is an arithmetic number, because the mean of its divisors is an integer number (31556).

2189308 is an apocalyptic number.

It is an amenable number.

189308 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189308 is a wasteful number, since it uses less digits than its factorization.

189308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772 (or 6770 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 189308 is about 435.0953918395. The cubic root of 189308 is about 57.4190922580.

The spelling of 189308 in words is "one hundred eighty-nine thousand, three hundred eight".

Divisors: 1 2 4 7 14 28 6761 13522 27044 47327 94654 189308