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193071 = 3139463
BaseRepresentation
bin101111001000101111
3100210211210
4233020233
522134241
64045503
71432614
oct571057
9323753
10193071
1112206a
1293893
1369b58
145050b
153c316
hex2f22f

193071 has 8 divisors (see below), whose sum is σ = 259840. Its totient is φ = 127512.

The previous prime is 193057. The next prime is 193073. The reversal of 193071 is 170391.

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

It is not a de Polignac number, because 193071 - 210 = 192047 is a prime.

It is a super-2 number, since 2×1930712 = 74552822082, 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 (193073) 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 7 ways as a sum of consecutive naturals, for example, 186 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (32480).

2193071 is an apocalyptic number.

193071 is a deficient number, since it is larger than the sum of its proper divisors (66769).

193071 is a wasteful number, since it uses less digits than its factorization.

193071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 193071 is about 439.3984524324. The cubic root of 193071 is about 57.7970512897.

The spelling of 193071 in words is "one hundred ninety-three thousand, seventy-one".

Divisors: 1 3 139 417 463 1389 64357 193071