Base | Representation |
---|---|
bin | 1001100011001… |
… | …01010110000000 |
3 | 12120201211222111 |
4 | 10301211112000 |
5 | 131001410010 |
6 | 11540545104 |
7 | 1661616520 |
oct | 461452600 |
9 | 176654874 |
10 | 80106880 |
11 | 41244537 |
12 | 229b2194 |
13 | 13799c29 |
14 | a8d3680 |
15 | 707558a |
hex | 4c65580 |
80106880 has 64 divisors (see below), whose sum is σ = 218875680. Its totient is φ = 27463680.
The previous prime is 80106877. The next prime is 80106889. The reversal of 80106880 is 8860108.
It is a tau number, because it is divible by the number of its divisors (64).
It is a super-2 number, since 2×801068802 = 12834224446668800, which contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (80106889) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4461 + ... + 13420.
Almost surely, 280106880 is an apocalyptic number.
80106880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.
It is an amenable number.
80106880 is an abundant number, since it is smaller than the sum of its proper divisors (138768800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80106880 is a wasteful number, since it uses less digits than its factorization.
80106880 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 17907 (or 17895 counting only the distinct ones).
The product of its (nonzero) digits is 3072, while the sum is 31.
The square root of 80106880 is about 8950.2446893926. The cubic root of 80106880 is about 431.0787409319.
Adding to 80106880 its reverse (8860108), we get a palindrome (88966988).
The spelling of 80106880 in words is "eighty million, one hundred six thousand, eight hundred eighty".
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