Base | Representation |
---|---|
bin | 100110011100… |
… | …0000111100001 |
3 | 1101220212110001 |
4 | 1030320013201 |
5 | 20124342201 |
6 | 1555540001 |
7 | 333203344 |
oct | 114700741 |
9 | 41825401 |
10 | 20152801 |
11 | 10415109 |
12 | 68ba601 |
13 | 4237b46 |
14 | 296845b |
15 | 1b81301 |
hex | 13381e1 |
20152801 has 8 divisors (see below), whose sum is σ = 20646144. Its totient is φ = 19662240.
The previous prime is 20152799. The next prime is 20152819. The reversal of 20152801 is 10825102.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 20152801 - 21 = 20152799 is a prime.
It is a super-2 number, since 2×201528012 = 812270776291202, which contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20152841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24076 + ... + 24898.
It is an arithmetic number, because the mean of its divisors is an integer number (2580768).
Almost surely, 220152801 is an apocalyptic number.
It is an amenable number.
20152801 is a deficient number, since it is larger than the sum of its proper divisors (493343).
20152801 is an equidigital number, since it uses as much as digits as its factorization.
20152801 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1391.
The product of its (nonzero) digits is 160, while the sum is 19.
The square root of 20152801 is about 4489.1871201811. The cubic root of 20152801 is about 272.1312848427.
Adding to 20152801 its reverse (10825102), we get a palindrome (30977903).
The spelling of 20152801 in words is "twenty million, one hundred fifty-two thousand, eight hundred one".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.199 sec. • engine limits •