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82951660 = 225113112163
BaseRepresentation
bin1001111000110…
…11110111101100
312210002101021201
410330123313230
5132213423120
612121535244
72025035401
oct474336754
9183071251
1082951660
11429078a0
1223944524
1314254a2c
14b0342a8
15743840a
hex4f1bdec

82951660 has 48 divisors (see below), whose sum is σ = 196180992. Its totient is φ = 29188800.

The previous prime is 82951621. The next prime is 82951667. The reversal of 82951660 is 6615928.

It is not an unprimeable number, because it can be changed into a prime (82951667) 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 15 ways as a sum of consecutive naturals, for example, 739 + ... + 12901.

It is an arithmetic number, because the mean of its divisors is an integer number (4087104).

Almost surely, 282951660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82951660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98090496).

82951660 is an abundant number, since it is smaller than the sum of its proper divisors (113229332).

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

82951660 is a wasteful number, since it uses less digits than its factorization.

82951660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214 (or 12212 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 82951660 is about 9107.7801905843. The cubic root of 82951660 is about 436.1223669665.

The spelling of 82951660 in words is "eighty-two million, nine hundred fifty-one thousand, six hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 31 44 55 62 110 124 155 220 310 341 620 682 1364 1705 3410 6820 12163 24326 48652 60815 121630 133793 243260 267586 377053 535172 668965 754106 1337930 1508212 1885265 2675860 3770530 4147583 7541060 8295166 16590332 20737915 41475830 82951660