Base | Representation |
---|---|
bin | 100110001100… |
… | …0111011000110 |
3 | 1101200101011210 |
4 | 1030120323012 |
5 | 20111300110 |
6 | 1553112250 |
7 | 332132004 |
oct | 114307306 |
9 | 41611153 |
10 | 20025030 |
11 | 10338113 |
12 | 6858686 |
13 | 41c193c |
14 | 2933a74 |
15 | 1b58520 |
hex | 1318ec6 |
20025030 has 16 divisors (see below), whose sum is σ = 48060144. Its totient is φ = 5340000.
The previous prime is 20025001. The next prime is 20025037. The reversal of 20025030 is 3052002.
It is a junction number, because it is equal to n+sod(n) for n = 20024997 and 20025015.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20025037) 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, 333721 + ... + 333780.
It is an arithmetic number, because the mean of its divisors is an integer number (3003759).
Almost surely, 220025030 is an apocalyptic number.
20025030 is an abundant number, since it is smaller than the sum of its proper divisors (28035114).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20025030 is a wasteful number, since it uses less digits than its factorization.
20025030 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 667511.
The product of its (nonzero) digits is 60, while the sum is 12.
The square root of 20025030 is about 4474.9335190592. The cubic root of 20025030 is about 271.5549509087.
Adding to 20025030 its reverse (3052002), we get a palindrome (23077032).
The spelling of 20025030 in words is "twenty million, twenty-five thousand, thirty".
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