Base | Representation |
---|---|
bin | 100110010001… |
… | …1111001110001 |
3 | 1101202122212101 |
4 | 1030203321301 |
5 | 20114220001 |
6 | 1554100401 |
7 | 332410060 |
oct | 114437161 |
9 | 41678771 |
10 | 20070001 |
11 | 10368986 |
12 | 687a701 |
13 | 4209253 |
14 | 29461d7 |
15 | 1b66a01 |
hex | 1323e71 |
20070001 has 8 divisors (see below), whose sum is σ = 23728320. Its totient is φ = 16609488.
The previous prime is 20069999. The next prime is 20070031. The reversal of 20070001 is 10007002.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 20070001 - 21 = 20069999 is a prime.
It is a self number, because there is not a number n which added to its sum of digits gives 20070001.
It is not an unprimeable number, because it can be changed into a prime (20070031) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49231 + ... + 49636.
It is an arithmetic number, because the mean of its divisors is an integer number (2966040).
Almost surely, 220070001 is an apocalyptic number.
It is an amenable number.
20070001 is a deficient number, since it is larger than the sum of its proper divisors (3658319).
20070001 is an equidigital number, since it uses as much as digits as its factorization.
20070001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 98903.
The product of its (nonzero) digits is 14, while the sum is 10.
The square root of 20070001 is about 4479.9554685287. The cubic root of 20070001 is about 271.7580794826.
Adding to 20070001 its reverse (10007002), we get a palindrome (30077003).
The spelling of 20070001 in words is "twenty million, seventy thousand, one".
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