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82947 = 343643
BaseRepresentation
bin10100010000000011
311012210010
4110100003
510123242
61440003
7463554
oct242003
9135703
1082947
1157357
1240003
132b9a7
142232b
151989c
hex14403

82947 has 8 divisors (see below), whose sum is σ = 113344. Its totient is φ = 53928.

The previous prime is 82939. The next prime is 82963. The reversal of 82947 is 74928.

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

It is not a de Polignac number, because 82947 - 23 = 82939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193 + ... + 450.

It is an arithmetic number, because the mean of its divisors is an integer number (14168).

282947 is an apocalyptic number.

82947 is a deficient number, since it is larger than the sum of its proper divisors (30397).

82947 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (82946) it forms an eRAP, since the sums of their prime factors are consecutive (688 and 689).

82947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689.

The product of its digits is 4032, while the sum is 30.

The square root of 82947 is about 288.0052082862. The cubic root of 82947 is about 43.6114200088.

The spelling of 82947 in words is "eighty-two thousand, nine hundred forty-seven".

Divisors: 1 3 43 129 643 1929 27649 82947