Base | Representation |
---|---|
bin | 11100001001111011… |
… | …101110010111010100 |
3 | 2220000212202101020212 |
4 | 130021323232113110 |
5 | 443403221004140 |
6 | 21515500144552 |
7 | 2120106564533 |
oct | 341173562724 |
9 | 86025671225 |
10 | 30231422420 |
11 | 11903939131 |
12 | 5a38538158 |
13 | 2b0a301944 |
14 | 166b08a31a |
15 | bbe0dd765 |
hex | 709eee5d4 |
30231422420 has 24 divisors (see below), whose sum is σ = 64433541984. Its totient is φ = 11912082336.
The previous prime is 30231422399. The next prime is 30231422449. The reversal of 30231422420 is 2422413203.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11279042 + ... + 11281721.
It is an arithmetic number, because the mean of its divisors is an integer number (2684730916).
Almost surely, 230231422420 is an apocalyptic number.
It is an amenable number.
30231422420 is an abundant number, since it is smaller than the sum of its proper divisors (34202119564).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
30231422420 is a wasteful number, since it uses less digits than its factorization.
30231422420 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 22560839 (or 22560837 counting only the distinct ones).
The product of its (nonzero) digits is 2304, while the sum is 23.
Adding to 30231422420 its reverse (2422413203), we get a palindrome (32653835623).
The spelling of 30231422420 in words is "thirty billion, two hundred thirty-one million, four hundred twenty-two thousand, four hundred twenty".
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