Base | Representation |
---|---|
bin | 100110100010… |
… | …0001000011101 |
3 | 1102000100221201 |
4 | 1031010020131 |
5 | 20132431023 |
6 | 2000555501 |
7 | 333466666 |
oct | 115041035 |
9 | 42010851 |
10 | 20202013 |
11 | 10449087 |
12 | 6922b91 |
13 | 4254370 |
14 | 297c36d |
15 | 1b90bad |
hex | 134421d |
20202013 has 8 divisors (see below), whose sum is σ = 22125600. Its totient is φ = 18331248.
The previous prime is 20202011. The next prime is 20202019. The reversal of 20202013 is 31020202.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 20202013 - 21 = 20202011 is a prime.
It is a Duffinian number.
It is a plaindrome in base 7.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20202011) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12403 + ... + 13936.
It is an arithmetic number, because the mean of its divisors is an integer number (2765700).
Almost surely, 220202013 is an apocalyptic number.
It is an amenable number.
20202013 is a deficient number, since it is larger than the sum of its proper divisors (1923587).
20202013 is a wasteful number, since it uses less digits than its factorization.
20202013 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26411.
The product of its (nonzero) digits is 24, while the sum is 10.
The square root of 20202013 is about 4494.6649485807. The cubic root of 20202013 is about 272.3526145165.
Adding to 20202013 its reverse (31020202), we get a palindrome (51222215).
The spelling of 20202013 in words is "twenty million, two hundred two thousand, thirteen".
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