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206443932 = 22317203661
BaseRepresentation
bin11000100111000…
…01010110011100
3112101110102211120
430103201112130
5410322201212
632252450540
75054513232
oct1423412634
9471412746
10206443932
11a6594422
1259179a50
1333a02396
141d5bc952
15131cd88c
hexc4e159c

206443932 has 12 divisors (see below), whose sum is σ = 481702536. Its totient is φ = 68814640.

The previous prime is 206443921. The next prime is 206443943. The reversal of 206443932 is 239344602.

It is an interprime number because it is at equal distance from previous prime (206443921) and next prime (206443943).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 206443893 and 206443902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8601819 + ... + 8601842.

It is an arithmetic number, because the mean of its divisors is an integer number (40141878).

Almost surely, 2206443932 is an apocalyptic number.

It is an amenable number.

206443932 is an abundant number, since it is smaller than the sum of its proper divisors (275258604).

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

206443932 is a wasteful number, since it uses less digits than its factorization.

206443932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17203668 (or 17203666 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The square root of 206443932 is about 14368.1568755356. The cubic root of 206443932 is about 591.0179992858.

The spelling of 206443932 in words is "two hundred six million, four hundred forty-three thousand, nine hundred thirty-two".

Divisors: 1 2 3 4 6 12 17203661 34407322 51610983 68814644 103221966 206443932