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82472660 = 2254123633
BaseRepresentation
bin1001110101001…
…10111011010100
312202012001012222
410322212323110
5132103111120
612103401512
72021002034
oct472467324
9182161188
1082472660
114260aa26
1223753298
13141179ba
14ad4b8c4
157391525
hex4ea6ed4

82472660 has 12 divisors (see below), whose sum is σ = 173192628. Its totient is φ = 32989056.

The previous prime is 82472653. The next prime is 82472681. The reversal of 82472660 is 6627428.

It can be written as a sum of positive squares in 2 ways, for example, as 34058896 + 48413764 = 5836^2 + 6958^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 82472660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2061797 + ... + 2061836.

It is an arithmetic number, because the mean of its divisors is an integer number (14432719).

Almost surely, 282472660 is an apocalyptic number.

It is an amenable number.

82472660 is an abundant number, since it is smaller than the sum of its proper divisors (90719968).

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

82472660 is a wasteful number, since it uses less digits than its factorization.

82472660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123642 (or 4123640 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 82472660 is about 9081.4459201165. The cubic root of 82472660 is about 435.2812907391.

The spelling of 82472660 in words is "eighty-two million, four hundred seventy-two thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 4123633 8247266 16494532 20618165 41236330 82472660