Base | Representation |
---|---|
bin | 10101101000101000… |
… | …100110111001010100 |
3 | 2012221221221010021200 |
4 | 111220220212321110 |
5 | 340033424441040 |
6 | 14401042112500 |
7 | 1451445252126 |
oct | 255050467124 |
9 | 65857833250 |
10 | 23230312020 |
11 | 99409a6283 |
12 | 460394b730 |
13 | 22629ca476 |
14 | 11a5321216 |
15 | 90e655630 |
hex | 568a26e54 |
23230312020 has 72 divisors (see below), whose sum is σ = 70480440576. Its totient is φ = 6193417152.
The previous prime is 23230312013. The next prime is 23230312043. The reversal of 23230312020 is 2021303232.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a junction number, because it is equal to n+sod(n) for n = 23230311984 and 23230312002.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1051609 + ... + 1073471.
It is an arithmetic number, because the mean of its divisors is an integer number (978895008).
Almost surely, 223230312020 is an apocalyptic number.
23230312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
23230312020 is an abundant number, since it is smaller than the sum of its proper divisors (47250128556).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
23230312020 is a wasteful number, since it uses less digits than its factorization.
23230312020 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27781 (or 27776 counting only the distinct ones).
The product of its (nonzero) digits is 432, while the sum is 18.
Adding to 23230312020 its reverse (2021303232), we get a palindrome (25251615252).
The spelling of 23230312020 in words is "twenty-three billion, two hundred thirty million, three hundred twelve thousand, twenty".
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