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80834660 = 22517237749
BaseRepresentation
bin1001101000101…
…11000001100100
312122002211022022
410310113001210
5131143202120
612004322312
72001040364
oct464270144
9178084268
1080834660
11416a1305
12230a3398
131399327a
14aa429a4
15716b025
hex4d17064

80834660 has 24 divisors (see below), whose sum is σ = 179739000. Its totient is φ = 30431744.

The previous prime is 80834623. The next prime is 80834669. The reversal of 80834660 is 6643808.

It can be written as a sum of positive squares in 4 ways, for example, as 18992164 + 61842496 = 4358^2 + 7864^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 80834660.

It is not an unprimeable number, because it can be changed into a prime (80834669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 118535 + ... + 119214.

It is an arithmetic number, because the mean of its divisors is an integer number (7489125).

Almost surely, 280834660 is an apocalyptic number.

It is an amenable number.

80834660 is an abundant number, since it is smaller than the sum of its proper divisors (98904340).

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

80834660 is a wasteful number, since it uses less digits than its factorization.

80834660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237775 (or 237773 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 80834660 is about 8990.8097521858. The cubic root of 80834660 is about 432.3802735858.

The spelling of 80834660 in words is "eighty million, eight hundred thirty-four thousand, six hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 237749 475498 950996 1188745 2377490 4041733 4754980 8083466 16166932 20208665 40417330 80834660