| Base | Representation |
|---|---|
| bin | 110100100011011… |
| … | …111110101000000 |
| 3 | 2021110010001100000 |
| 4 | 310203133311000 |
| 5 | 3301210030030 |
| 6 | 223254200000 |
| 7 | 30564334053 |
| oct | 6443376500 |
| 9 | 2243101300 |
| 10 | 881720640 |
| 11 | 412787849 |
| 12 | 207353000 |
| 13 | 1108964b8 |
| 14 | 8515ca9a |
| 15 | 5261a860 |
| hex | 348dfd40 |
881720640 has 672 divisors, whose sum is σ = 3594689280. Its totient is φ = 204374016.
The previous prime is 881720599. The next prime is 881720641. The reversal of 881720640 is 46027188.
881720640 is a `hidden beast` number, since 8 + 8 + 1 + 7 + 2 + 0 + 640 = 666.
881720640 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 = 881720595 and 881720604.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (881720641) by changing a digit.
It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 30404146 + ... + 30404174.
It is an arithmetic number, because the mean of its divisors is an integer number (5349240).
Almost surely, 2881720640 is an apocalyptic number.
881720640 is a gapful number since it is divisible by the number (80) 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 881720640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797344640).
881720640 is an abundant number, since it is smaller than the sum of its proper divisors (2712968640).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
881720640 is a wasteful number, since it uses less digits than its factorization.
881720640 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 101 (or 79 counting only the distinct ones).
The product of its (nonzero) digits is 21504, while the sum is 36.
The square root of 881720640 is about 29693.7811671064. The cubic root of 881720640 is about 958.9081336248.
The spelling of 881720640 in words is "eight hundred eighty-one million, seven hundred twenty thousand, six hundred forty".
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