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80168080 = 2451002101
BaseRepresentation
bin1001100011101…
…00010010010000
312120211221221011
410301310102100
5131010334310
611542140304
71662263116
oct461642220
9176757834
1080168080
1141286513
1222a21694
13137bba45
14a90bab6
15708878a
hex4c74490

80168080 has 20 divisors (see below), whose sum is σ = 186390972. Its totient is φ = 32067200.

The previous prime is 80168071. The next prime is 80168149. The reversal of 80168080 is 8086108.

It can be written as a sum of positive squares in 2 ways, for example, as 63489024 + 16679056 = 7968^2 + 4084^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 500971 + ... + 501130.

Almost surely, 280168080 is an apocalyptic number.

80168080 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80168080 is an abundant number, since it is smaller than the sum of its proper divisors (106222892).

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

80168080 is a wasteful number, since it uses less digits than its factorization.

80168080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1002114 (or 1002108 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 80168080 is about 8953.6629375915. The cubic root of 80168080 is about 431.1884914026.

The spelling of 80168080 in words is "eighty million, one hundred sixty-eight thousand, eighty".

Divisors: 1 2 4 5 8 10 16 20 40 80 1002101 2004202 4008404 5010505 8016808 10021010 16033616 20042020 40084040 80168080