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82986943 = 132569863
BaseRepresentation
bin1001111001001…
…00011110111111
312210011011200111
410330210132333
5132221040233
612122410451
72025243304
oct474443677
9183134614
1082986943
1142931356
1223960a27
1314267b00
14b0430ab
157443acd
hex4f247bf

82986943 has 12 divisors (see below), whose sum is σ = 90123840. Its totient is φ = 76380096.

The previous prime is 82986941. The next prime is 82986949. The reversal of 82986943 is 34968928.

It is not a de Polignac number, because 82986943 - 21 = 82986941 is a prime.

It is a Duffinian number.

Its product of digits (746496) is a multiple of the sum of its prime factors (1458).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82986941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95730 + ... + 96592.

It is an arithmetic number, because the mean of its divisors is an integer number (7510320).

Almost surely, 282986943 is an apocalyptic number.

82986943 is a deficient number, since it is larger than the sum of its proper divisors (7136897).

82986943 is a wasteful number, since it uses less digits than its factorization.

82986943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458 (or 1445 counting only the distinct ones).

The product of its digits is 746496, while the sum is 49.

The square root of 82986943 is about 9109.7169549882. The cubic root of 82986943 is about 436.1841922284.

The spelling of 82986943 in words is "eighty-two million, nine hundred eighty-six thousand, nine hundred forty-three".

Divisors: 1 13 169 569 863 7397 11219 96161 145847 491047 6383611 82986943