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82169383 = 2910327509
BaseRepresentation
bin1001110010111…
…00111000100111
312201121122012111
410321130320213
5132013410013
612053101451
72015266612
oct471347047
9181548174
1082169383
114242308a
1223627887
131403c94a
14acad179
15733173d
hex4e5ce27

82169383 has 8 divisors (see below), whose sum is σ = 85831200. Its totient is φ = 78562848.

The previous prime is 82169369. The next prime is 82169387. The reversal of 82169383 is 38396128.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-82169383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82169387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10768 + ... + 16741.

It is an arithmetic number, because the mean of its divisors is an integer number (10728900).

Almost surely, 282169383 is an apocalyptic number.

82169383 is a deficient number, since it is larger than the sum of its proper divisors (3661817).

82169383 is a wasteful number, since it uses less digits than its factorization.

82169383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27641.

The product of its digits is 62208, while the sum is 40.

The square root of 82169383 is about 9064.7329249129. The cubic root of 82169383 is about 434.7470815842.

The spelling of 82169383 in words is "eighty-two million, one hundred sixty-nine thousand, three hundred eighty-three".

Divisors: 1 29 103 2987 27509 797761 2833427 82169383