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82210960 = 24513137577
BaseRepresentation
bin1001110011001…
…11000010010000
312201200202020101
410321213002100
5132021222320
612054022144
72015532046
oct471470220
9181622211
1082210960
1142451347
1223647954
1314055850
14acc0396
15733dc0a
hex4e67090

82210960 has 80 divisors (see below), whose sum is σ = 207705456. Its totient is φ = 30081024.

The previous prime is 82210951. The next prime is 82210987. The reversal of 82210960 is 6901228.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1354896 + 80856064 = 1164^2 + 8992^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142192 + ... + 142768.

Almost surely, 282210960 is an apocalyptic number.

82210960 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 82210960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103852728).

82210960 is an abundant number, since it is smaller than the sum of its proper divisors (125494496).

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

82210960 is a wasteful number, since it uses less digits than its factorization.

82210960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 82210960 is about 9067.0259732726. The cubic root of 82210960 is about 434.8203953130.

The spelling of 82210960 in words is "eighty-two million, two hundred ten thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 13 16 20 26 40 52 65 80 104 130 137 208 260 274 520 548 577 685 1040 1096 1154 1370 1781 2192 2308 2740 2885 3562 4616 5480 5770 7124 7501 8905 9232 10960 11540 14248 15002 17810 23080 28496 30004 35620 37505 46160 60008 71240 75010 79049 120016 142480 150020 158098 300040 316196 395245 600080 632392 790490 1027637 1264784 1580980 2055274 3161960 4110548 5138185 6323920 8221096 10276370 16442192 20552740 41105480 82210960