Base | Representation |
---|---|
bin | 100110100101… |
… | …0111110001110 |
3 | 1102001210101101 |
4 | 1031022332032 |
5 | 20134330110 |
6 | 2001333314 |
7 | 333644452 |
oct | 115127616 |
9 | 42053341 |
10 | 20230030 |
11 | 10468137 |
12 | 693723a |
13 | 4264042 |
14 | 2988662 |
15 | 1b9913a |
hex | 134af8e |
20230030 has 16 divisors (see below), whose sum is σ = 36928224. Its totient is φ = 7977760.
The previous prime is 20229991. The next prime is 20230031. The reversal of 20230030 is 3003202.
It is a super-2 number, since 2×202300302 = 818508227601800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (10).
It is a junction number, because it is equal to n+sod(n) for n = 20229989 and 20230016.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20230031) 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, 13537 + ... + 14956.
It is an arithmetic number, because the mean of its divisors is an integer number (2308014).
Almost surely, 220230030 is an apocalyptic number.
20230030 is a deficient number, since it is larger than the sum of its proper divisors (16698194).
20230030 is a wasteful number, since it uses less digits than its factorization.
20230030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 28571.
The product of its (nonzero) digits is 36, while the sum is 10.
The square root of 20230030 is about 4497.7805637892. The cubic root of 20230030 is about 272.4784597063.
Adding to 20230030 its reverse (3003202), we get a palindrome (23233232).
The spelling of 20230030 in words is "twenty million, two hundred thirty thousand, thirty".
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