Base | Representation |
---|---|
bin | 1001010101111100101… |
… | …10011100001001101100 |
3 | 1010200121111220020201011 |
4 | 10222332112130021230 |
5 | 20224422402232140 |
6 | 403250340555004 |
7 | 32123126416531 |
oct | 4527626341154 |
9 | 1120544806634 |
10 | 321021133420 |
11 | 114165073a39 |
12 | 522713b2a64 |
13 | 2436cc329b0 |
14 | 11774cb6d88 |
15 | 853cdd2cea |
hex | 4abe59c26c |
321021133420 has 96 divisors (see below), whose sum is σ = 732723038208. Its totient is φ = 117436096512.
The previous prime is 321021133357. The next prime is 321021133439. The reversal of 321021133420 is 24331120123.
It is a super-2 number, since 2×3210211334202 (a number of 24 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 321021133391 and 321021133400.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25518172 + ... + 25530748.
It is an arithmetic number, because the mean of its divisors is an integer number (7632531648).
Almost surely, 2321021133420 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 321021133420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366361519104).
321021133420 is an abundant number, since it is smaller than the sum of its proper divisors (411701904788).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
321021133420 is a wasteful number, since it uses less digits than its factorization.
321021133420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 13499 (or 13497 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 22.
Adding to 321021133420 its reverse (24331120123), we get a palindrome (345352253543).
The spelling of 321021133420 in words is "three hundred twenty-one billion, twenty-one million, one hundred thirty-three thousand, four hundred twenty".
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