| Base | Representation |
|---|---|
| bin | 11110100001010… |
| … | …00110111100100 |
| 3 | 122211202011100000 |
| 4 | 33100220313210 |
| 5 | 1011020114230 |
| 6 | 41223221300 |
| 7 | 6226063551 |
| oct | 1720506744 |
| 9 | 584664300 |
| 10 | 256019940 |
| 11 | 121575630 |
| 12 | 718a7830 |
| 13 | 4106c7b7 |
| 14 | 26005a28 |
| 15 | 17722b60 |
| hex | f428de4 |
256019940 has 144 divisors (see below), whose sum is σ = 878754240. Its totient is φ = 62052480.
The previous prime is 256019879. The next prime is 256019947. The reversal of 256019940 is 49910652.
256019940 is a `hidden beast` number, since 2 + 5 + 601 + 9 + 9 + 40 = 666.
256019940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a junction number, because it is equal to n+sod(n) for n = 256019895 and 256019904.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (256019947) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51066 + ... + 55854.
It is an arithmetic number, because the mean of its divisors is an integer number (6102460).
Almost surely, 2256019940 is an apocalyptic number.
256019940 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 256019940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (439377120).
256019940 is an abundant number, since it is smaller than the sum of its proper divisors (622734300).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
256019940 is a wasteful number, since it uses less digits than its factorization.
256019940 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4824 (or 4810 counting only the distinct ones).
The product of its (nonzero) digits is 19440, while the sum is 36.
The square root of 256019940 is about 16000.6231128666. The cubic root of 256019940 is about 634.9769061806.
It can be divided in two parts, 2560 and 19940, that added together give a square (22500 = 1502).
The spelling of 256019940 in words is "two hundred fifty-six million, nineteen thousand, nine hundred forty".
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