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8000808080 = 245891123709
BaseRepresentation
bin1110111001110001…
…01010010010010000
3202122120221011101012
413130320222102100
5112341201324310
63401525030052
7402160514036
oct73470522220
922576834335
108000808080
11343627a591
121673555328
139a6766b85
1455c838556
1531c609c05
hex1dce2a490

8000808080 has 40 divisors (see below), whose sum is σ = 18810905400. Its totient is φ = 3164361728.

The previous prime is 8000808061. The next prime is 8000808091. The reversal of 8000808080 is 808080008.

It can be written as a sum of positive squares in 4 ways, for example, as 1099850896 + 6900957184 = 33164^2 + 83072^2 .

It is a tau number, because it is divible by the number of its divisors (40).

8000808080 is a modest number, since divided by 808080 gives 8000 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554735 + ... + 568974.

It is an arithmetic number, because the mean of its divisors is an integer number (470272635).

Almost surely, 28000808080 is an apocalyptic number.

8000808080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8000808080 is an abundant number, since it is smaller than the sum of its proper divisors (10810097320).

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

8000808080 is a wasteful number, since it uses less digits than its factorization.

8000808080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123811 (or 1123805 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 32.

The square root of 8000808080 is about 89447.2362904523. The cubic root of 8000808080 is about 2000.0673377328.

Adding to 8000808080 its reverse (808080008), we get a palindrome (8808888088).

The spelling of 8000808080 in words is "eight billion, eight hundred eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 89 178 356 445 712 890 1424 1780 3560 7120 1123709 2247418 4494836 5618545 8989672 11237090 17979344 22474180 44948360 89896720 100010101 200020202 400040404 500050505 800080808 1000101010 1600161616 2000202020 4000404040 8000808080