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199983705 = 35371931867
BaseRepresentation
bin10111110101110…
…00001001011001
3111221022020001220
423322320021121
5402143434310
631502202253
74645555605
oct1372701131
9457266056
10199983705
11a2981799
1256b83389
133257ca6c
141c7ba505
1512854670
hexbeb8259

199983705 has 32 divisors (see below), whose sum is σ = 330501504. Its totient is φ = 103182336.

The previous prime is 199983703. The next prime is 199983709. The reversal of 199983705 is 507389991.

It is a happy number.

It is not a de Polignac number, because 199983705 - 21 = 199983703 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199983701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106182 + ... + 108048.

It is an arithmetic number, because the mean of its divisors is an integer number (10328172).

Almost surely, 2199983705 is an apocalyptic number.

199983705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199983705 is a deficient number, since it is larger than the sum of its proper divisors (130517799).

199983705 is a wasteful number, since it uses less digits than its factorization.

199983705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105.

The product of its (nonzero) digits is 612360, while the sum is 51.

The square root of 199983705 is about 14141.5594967458. The cubic root of 199983705 is about 584.7876649215.

The spelling of 199983705 in words is "one hundred ninety-nine million, nine hundred eighty-three thousand, seven hundred five".

Divisors: 1 3 5 15 37 111 185 193 555 579 965 1867 2895 5601 7141 9335 21423 28005 35705 69079 107115 207237 345395 360331 1036185 1080993 1801655 5404965 13332247 39996741 66661235 199983705