Base | Representation |
---|---|
bin | 1001100010100… |
… | …01001010011100 |
3 | 12120120122121000 |
4 | 10301101022130 |
5 | 130441233340 |
6 | 11535110300 |
7 | 1661123523 |
oct | 461211234 |
9 | 176518530 |
10 | 80024220 |
11 | 41198421 |
12 | 22972390 |
13 | 1376b413 |
14 | a8b14ba |
15 | 705ad30 |
hex | 4c5129c |
80024220 has 48 divisors (see below), whose sum is σ = 248965920. Its totient is φ = 21339648.
The previous prime is 80024213. The next prime is 80024249. The reversal of 80024220 is 2242008.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 80024193 and 80024202.
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, 73557 + ... + 74636.
It is an arithmetic number, because the mean of its divisors is an integer number (5186790).
Almost surely, 280024220 is an apocalyptic number.
It is an amenable number.
80024220 is an abundant number, since it is smaller than the sum of its proper divisors (168941700).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80024220 is a wasteful number, since it uses less digits than its factorization.
80024220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 148211 (or 148203 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 18.
The square root of 80024220 is about 8945.6257466988. The cubic root of 80024220 is about 430.9304172924.
Adding to 80024220 its reverse (2242008), we get a palindrome (82266228).
The spelling of 80024220 in words is "eighty million, twenty-four thousand, two hundred twenty".
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