Base | Representation |
---|---|
bin | 10010111010000101… |
… | …111111101101001100 |
3 | 1221101212210121111210 |
4 | 102322011333231030 |
5 | 313034303044040 |
6 | 13154314214420 |
7 | 1316050115115 |
oct | 227205775514 |
9 | 57355717453 |
10 | 20302003020 |
11 | 8678a513a2 |
12 | 3b27124410 |
13 | 1bb7127350 |
14 | da845b20c |
15 | 7dc523480 |
hex | 4ba17fb4c |
20302003020 has 96 divisors (see below), whose sum is σ = 61993451520. Its totient is φ = 4934142720.
The previous prime is 20302003003. The next prime is 20302003027. The reversal of 20302003020 is 2030020302.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 20302002987 and 20302003005.
It is not an unprimeable number, because it can be changed into a prime (20302003027) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103116 + ... + 226355.
It is an arithmetic number, because the mean of its divisors is an integer number (645765120).
Almost surely, 220302003020 is an apocalyptic number.
20302003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
20302003020 is an abundant number, since it is smaller than the sum of its proper divisors (41691448500).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20302003020 is a wasteful number, since it uses less digits than its factorization.
20302003020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 329575 (or 329573 counting only the distinct ones).
The product of its (nonzero) digits is 72, while the sum is 12.
Adding to 20302003020 its reverse (2030020302), we get a palindrome (22332023322).
The spelling of 20302003020 in words is "twenty billion, three hundred two million, three thousand, twenty".
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