| Base | Representation |
|---|---|
| bin | 100111110000… |
| … | …1111001110000 |
| 3 | 1110020012102001 |
| 4 | 1033201321300 |
| 5 | 20314120430 |
| 6 | 2022503344 |
| 7 | 342131020 |
| oct | 117417160 |
| 9 | 43205361 |
| 10 | 20848240 |
| 11 | 1084a656 |
| 12 | 6b94b54 |
| 13 | 441c54a |
| 14 | 2aa9a80 |
| 15 | 1c6c3ca |
| hex | 13e1e70 |
20848240 has 80 divisors (see below), whose sum is σ = 56424960. Its totient is φ = 7015680.
The previous prime is 20848237. The next prime is 20848241. The reversal of 20848240 is 4284802.
It is a tau number, because it is divible by the number of its divisors (80).
It is a super-2 number, since 2×208482402 = 869298222195200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (28).
It is a junction number, because it is equal to n+sod(n) for n = 20848199 and 20848208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20848241) 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 15 ways as a sum of consecutive naturals, for example, 32725 + ... + 33355.
It is an arithmetic number, because the mean of its divisors is an integer number (705312).
Almost surely, 220848240 is an apocalyptic number.
20848240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 20848240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28212480).
20848240 is an abundant number, since it is smaller than the sum of its proper divisors (35576720).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20848240 is a wasteful number, since it uses less digits than its factorization.
20848240 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 710 (or 704 counting only the distinct ones).
The product of its (nonzero) digits is 4096, while the sum is 28.
The square root of 20848240 is about 4565.9872973980. The cubic root of 20848240 is about 275.2262160666.
The spelling of 20848240 in words is "twenty million, eight hundred forty-eight thousand, two hundred forty".
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