| Base | Representation |
|---|---|
| bin | 10011000001011100… |
| … | …000010110101100000 |
| 3 | 1221201110122212021000 |
| 4 | 103001130002311200 |
| 5 | 313312324123040 |
| 6 | 13214435232000 |
| 7 | 1322104351422 |
| oct | 230134026540 |
| 9 | 57643585230 |
| 10 | 20425223520 |
| 11 | 8731562819 |
| 12 | 3b60448600 |
| 13 | 1c0680b0a0 |
| 14 | dba974812 |
| 15 | 7e8263130 |
| hex | 4c1702d60 |
20425223520 has 384 divisors, whose sum is σ = 77275054080. Its totient is φ = 5008988160.
The previous prime is 20425223509. The next prime is 20425223521. The reversal of 20425223520 is 2532252402.
20425223520 is a `hidden beast` number, since 2 + 0 + 425 + 2 + 235 + 2 + 0 = 666.
It is a super-2 number, since 2×204252235202 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (20425223521) 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 63 ways as a sum of consecutive naturals, for example, 20610225 + ... + 20611215.
It is an arithmetic number, because the mean of its divisors is an integer number (201237120).
Almost surely, 220425223520 is an apocalyptic number.
20425223520 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 20425223520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38637527040).
20425223520 is an abundant number, since it is smaller than the sum of its proper divisors (56849830560).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20425223520 is a wasteful number, since it uses less digits than its factorization.
20425223520 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1395 (or 1381 counting only the distinct ones).
The product of its (nonzero) digits is 9600, while the sum is 27.
Adding to 20425223520 its reverse (2532252402), we get a palindrome (22957475922).
The spelling of 20425223520 in words is "twenty billion, four hundred twenty-five million, two hundred twenty-three thousand, five hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.069 sec. • engine limits •