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194442 = 23231409
BaseRepresentation
bin101111011110001010
3100212201120
4233132022
522210232
64100110
71436613
oct573612
9325646
10194442
111230a6
1294636
136a671
1450c0a
153c92c
hex2f78a

194442 has 16 divisors (see below), whose sum is σ = 406080. Its totient is φ = 61952.

The previous prime is 194431. The next prime is 194443. The reversal of 194442 is 244491.

194442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (194443) 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, 567 + ... + 842.

It is an arithmetic number, because the mean of its divisors is an integer number (25380).

2194442 is an apocalyptic number.

194442 is an abundant number, since it is smaller than the sum of its proper divisors (211638).

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

194442 is a wasteful number, since it uses less digits than its factorization.

194442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437.

The product of its digits is 1152, while the sum is 24.

The square root of 194442 is about 440.9557800959. The cubic root of 194442 is about 57.9335346436.

It can be divided in two parts, 194 and 442, that added together give a palindrome (636).

The spelling of 194442 in words is "one hundred ninety-four thousand, four hundred forty-two".

Divisors: 1 2 3 6 23 46 69 138 1409 2818 4227 8454 32407 64814 97221 194442