Base | Representation |
---|---|
bin | 100100000011111… |
… | …1000000111100100 |
3 | 10010022212121110021 |
4 | 1020013320013210 |
5 | 4434231240140 |
6 | 320023004524 |
7 | 41662015663 |
oct | 11007700744 |
9 | 3108777407 |
10 | 1210024420 |
11 | 571033290 |
12 | 299299744 |
13 | 1638c41a7 |
14 | b69bcdda |
15 | 7136ab4a |
hex | 481f81e4 |
1210024420 has 96 divisors (see below), whose sum is σ = 2901225600. Its totient is φ = 419865600.
The previous prime is 1210024399. The next prime is 1210024423. The reversal of 1210024420 is 244200121.
It is a junction number, because it is equal to n+sod(n) for n = 1210024394 and 1210024403.
It is not an unprimeable number, because it can be changed into a prime (1210024423) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 566755 + ... + 568885.
It is an arithmetic number, because the mean of its divisors is an integer number (30221100).
Almost surely, 21210024420 is an apocalyptic number.
1210024420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1210024420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1450612800).
1210024420 is an abundant number, since it is smaller than the sum of its proper divisors (1691201180).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1210024420 is a wasteful number, since it uses less digits than its factorization.
1210024420 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 2269 (or 2267 counting only the distinct ones).
The product of its (nonzero) digits is 128, while the sum is 16.
The square root of 1210024420 is about 34785.4052729014. The cubic root of 1210024420 is about 1065.6094053153.
Adding to 1210024420 its reverse (244200121), we get a palindrome (1454224541).
The spelling of 1210024420 in words is "one billion, two hundred ten million, twenty-four thousand, four hundred twenty".
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