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82573660 = 22513317591
BaseRepresentation
bin1001110101111…
…11100101011100
312202101011202201
410322333211130
5132114324120
612105501244
72021602351
oct472774534
9182334681
1082573660
11426798a4
12237a1824
1314151970
14ad76628
1573b140a
hex4ebf95c

82573660 has 24 divisors (see below), whose sum is σ = 186744096. Its totient is φ = 30488640.

The previous prime is 82573649. The next prime is 82573663. The reversal of 82573660 is 6637528.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82573663) 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 7 ways as a sum of consecutive naturals, for example, 158536 + ... + 159055.

It is an arithmetic number, because the mean of its divisors is an integer number (7781004).

Almost surely, 282573660 is an apocalyptic number.

It is an amenable number.

82573660 is an abundant number, since it is smaller than the sum of its proper divisors (104170436).

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

82573660 is a wasteful number, since it uses less digits than its factorization.

82573660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317613 (or 317611 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 82573660 is about 9087.0050071517. The cubic root of 82573660 is about 435.4589070788.

The spelling of 82573660 in words is "eighty-two million, five hundred seventy-three thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 317591 635182 1270364 1587955 3175910 4128683 6351820 8257366 16514732 20643415 41286830 82573660