Base | Representation |
---|---|
bin | 100111110010… |
… | …1100101110001 |
3 | 1110020222010111 |
4 | 1033211211301 |
5 | 20320111340 |
6 | 2023101321 |
7 | 342223036 |
oct | 117454561 |
9 | 43228114 |
10 | 20863345 |
11 | 1085aa38 |
12 | 6ba1841 |
13 | 4426399 |
14 | 2ab138d |
15 | 1c71aea |
hex | 13e5971 |
20863345 has 8 divisors (see below), whose sum is σ = 25176960. Its totient is φ = 16596720.
The previous prime is 20863321. The next prime is 20863351. The reversal of 20863345 is 54336802.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 20863345 - 25 = 20863313 is a prime.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10761 + ... + 12550.
It is an arithmetic number, because the mean of its divisors is an integer number (3147120).
Almost surely, 220863345 is an apocalyptic number.
It is an amenable number.
20863345 is a deficient number, since it is larger than the sum of its proper divisors (4313615).
20863345 is a wasteful number, since it uses less digits than its factorization.
20863345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 23495.
The product of its (nonzero) digits is 17280, while the sum is 31.
The square root of 20863345 is about 4567.6410760917. The cubic root of 20863345 is about 275.2926691322.
The spelling of 20863345 in words is "twenty million, eight hundred sixty-three thousand, three hundred forty-five".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.001 sec. • engine limits •