| Base | Representation |
|---|---|
| bin | 10011101111110011… |
| … | …001010011010000000 |
| 3 | 2000201200020211002100 |
| 4 | 103233303022122000 |
| 5 | 321410434121101 |
| 6 | 13423542350400 |
| 7 | 1350300554556 |
| oct | 235763123200 |
| 9 | 60650224070 |
| 10 | 21203035776 |
| 11 | 8aa061966a |
| 12 | 4138a2b400 |
| 13 | 1ccb9c2b20 |
| 14 | 1051da5bd6 |
| 15 | 8416a5e86 |
| hex | 4efcca680 |
21203035776 has 384 divisors, whose sum is σ = 68612544000. Its totient is φ = 6240706560.
The previous prime is 21203035771. The next prime is 21203035823. The reversal of 21203035776 is 67753030212.
It is a tau number, because it is divible by the number of its divisors (384).
It is a super-2 number, since 2×212030357762 (a number of 21 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a self number, because there is not a number n which added to its sum of digits gives 21203035776.
It is not an unprimeable number, because it can be changed into a prime (21203035771) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 50603695 + ... + 50604113.
It is an arithmetic number, because the mean of its divisors is an integer number (178678500).
Almost surely, 221203035776 is an apocalyptic number.
21203035776 is a gapful number since it is divisible by the number (26) 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 21203035776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34306272000).
21203035776 is an abundant number, since it is smaller than the sum of its proper divisors (47409508224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21203035776 is a wasteful number, since it uses less digits than its factorization.
21203035776 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 592 (or 577 counting only the distinct ones).
The product of its (nonzero) digits is 52920, while the sum is 36.
Adding to 21203035776 its reverse (67753030212), we get a palindrome (88956065988).
The spelling of 21203035776 in words is "twenty-one billion, two hundred three million, thirty-five thousand, seven hundred seventy-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •