| Base | Representation |
|---|---|
| bin | 11101010001100… |
| … | …000011110000000 |
| 3 | 1021020010220221000 |
| 4 | 131101200132000 |
| 5 | 2001212104304 |
| 6 | 120422332000 |
| 7 | 15112345053 |
| oct | 3521403600 |
| 9 | 1236126830 |
| 10 | 491128704 |
| 11 | 2322582a0 |
| 12 | 11858a000 |
| 13 | 7a99a201 |
| 14 | 49326a9a |
| 15 | 2d1b4939 |
| hex | 1d460780 |
491128704 has 128 divisors (see below), whose sum is σ = 1581408000. Its totient is φ = 148815360.
The previous prime is 491128669. The next prime is 491128711. The reversal of 491128704 is 407821194.
It is a tau number, because it is divible by the number of its divisors (128).
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31557 + ... + 44475.
It is an arithmetic number, because the mean of its divisors is an integer number (12354750).
Almost surely, 2491128704 is an apocalyptic number.
491128704 is a gapful number since it is divisible by the number (44) 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 491128704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790704000).
491128704 is an abundant number, since it is smaller than the sum of its proper divisors (1090279296).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
491128704 is a wasteful number, since it uses less digits than its factorization.
491128704 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 12953 (or 12935 counting only the distinct ones).
The product of its (nonzero) digits is 16128, while the sum is 36.
The square root of 491128704 is about 22161.4237809758. The cubic root of 491128704 is about 788.9783856792.
Adding to 491128704 its reverse (407821194), we get a palindrome (898949898).
It can be divided in two parts, 49 and 1128704, that added together give a triangular number (1128753 = T1502).
The spelling of 491128704 in words is "four hundred ninety-one million, one hundred twenty-eight thousand, seven hundred four".
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