Base | Representation |
---|---|
bin | 10010111010000101… |
… | …111111001101110010 |
3 | 1221101212210111202100 |
4 | 102322011333031302 |
5 | 313034303013020 |
6 | 13154314201230 |
7 | 1316050106214 |
oct | 227205771562 |
9 | 57355714670 |
10 | 20302001010 |
11 | 8678a4a935 |
12 | 3b27123216 |
13 | 1bb7126465 |
14 | da845a5b4 |
15 | 7dc522a90 |
hex | 4ba17f372 |
20302001010 has 96 divisors (see below), whose sum is σ = 54710164080. Its totient is φ = 5219126784.
The previous prime is 20302000987. The next prime is 20302001021. The reversal of 20302001010 is 1010020302.
It is a happy number.
It can be written as a sum of positive squares in 8 ways, for example, as 12239218161 + 8062782849 = 110631^2 + 89793^2 .
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 20302000983 and 20302001001.
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 335004 + ... + 390936.
Almost surely, 220302001010 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20302001010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27355082040).
20302001010 is an abundant number, since it is smaller than the sum of its proper divisors (34408163070).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20302001010 is a wasteful number, since it uses less digits than its factorization.
20302001010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 56092 (or 56089 counting only the distinct ones).
The product of its (nonzero) digits is 12, while the sum is 9.
Adding to 20302001010 its reverse (1010020302), we get a palindrome (21312021312).
The spelling of 20302001010 in words is "twenty billion, three hundred two million, one thousand, ten".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.070 sec. • engine limits •