| Base | Representation |
|---|---|
| bin | 1100110001111100… |
| … | …10100110110111000 |
| 3 | 122201012000101121120 |
| 4 | 12120332110312320 |
| 5 | 103023012124423 |
| 6 | 3052504305240 |
| 7 | 332014204335 |
| oct | 63076246670 |
| 9 | 18635011546 |
| 10 | 6861442488 |
| 11 | 2a0111832a |
| 12 | 13b5a72220 |
| 13 | 8546b2354 |
| 14 | 4913ad98c |
| 15 | 2a2599ee3 |
| hex | 198f94db8 |
6861442488 has 128 divisors (see below), whose sum is σ = 19160064000. Its totient is φ = 2034892800.
The previous prime is 6861442481. The next prime is 6861442561. The reversal of 6861442488 is 8842441686.
It is a super-2 number, since 2×68614424882 = 94158786032263260288, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (51).
It is a nude number because it is divisible by every one of its digits.
It is a self number, because there is not a number n which added to its sum of digits gives 6861442488.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (6861442481) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5960713 + ... + 5961863.
It is an arithmetic number, because the mean of its divisors is an integer number (149688000).
Almost surely, 26861442488 is an apocalyptic number.
6861442488 is a gapful number since it is divisible by the number (68) 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 6861442488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9580032000).
6861442488 is an abundant number, since it is smaller than the sum of its proper divisors (12298621512).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
6861442488 is a wasteful number, since it uses less digits than its factorization.
6861442488 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1965 (or 1961 counting only the distinct ones).
The product of its digits is 2359296, while the sum is 51.
The square root of 6861442488 is about 82833.8245404617. The cubic root of 6861442488 is about 1900.2255030595.
The spelling of 6861442488 in words is "six billion, eight hundred sixty-one million, four hundred forty-two thousand, four hundred eighty-eight".
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