| Base | Representation |
|---|---|
| bin | 111100011100001… |
| … | …0000011110000000 |
| 3 | 12020100001202102220 |
| 4 | 1320320100132000 |
| 5 | 13123132412230 |
| 6 | 533123211040 |
| 7 | 101153554425 |
| oct | 17070203600 |
| 9 | 5210052386 |
| 10 | 2028013440 |
| 11 | 950840572 |
| 12 | 487216a80 |
| 13 | 26420506b |
| 14 | 1534abd4c |
| 15 | bd097d10 |
| hex | 78e10780 |
2028013440 has 128 divisors (see below), whose sum is σ = 6479464320. Its totient is φ = 539535360.
The previous prime is 2028013423. The next prime is 2028013447. The reversal of 2028013440 is 443108202.
It is a tau number, because it is divible by the number of its divisors (128).
It is a super-2 number, since 2×20280134402 = 8225677025641267200, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a self number, because there is not a number n which added to its sum of digits gives 2028013440.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2028013447) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049275 + ... + 1051205.
It is an arithmetic number, because the mean of its divisors is an integer number (50620815).
Almost surely, 22028013440 is an apocalyptic number.
2028013440 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 2028013440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3239732160).
2028013440 is an abundant number, since it is smaller than the sum of its proper divisors (4451450880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2028013440 is a wasteful number, since it uses less digits than its factorization.
2028013440 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2500 (or 2488 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 24.
The square root of 2028013440 is about 45033.4702193824. The cubic root of 2028013440 is about 1265.7762507974.
The spelling of 2028013440 in words is "two billion, twenty-eight million, thirteen thousand, four hundred forty".
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