| Base | Representation |
|---|---|
| bin | 11101010001011… |
| … | …101111110010000 |
| 3 | 1021020010101220100 |
| 4 | 131101131332100 |
| 5 | 2001211242410 |
| 6 | 120422212400 |
| 7 | 15112303206 |
| oct | 3521357620 |
| 9 | 1236111810 |
| 10 | 491118480 |
| 11 | 232250646 |
| 12 | 118584100 |
| 13 | 7a995668 |
| 14 | 49323076 |
| 15 | 2d1b18c0 |
| hex | 1d45df90 |
491118480 has 240 divisors, whose sum is σ = 1749084480. Its totient is φ = 123282432.
The previous prime is 491118473. The next prime is 491118487. The reversal of 491118480 is 84811194.
491118480 is a `hidden beast` number, since 491 + 11 + 84 + 80 = 666.
It is an interprime number because it is at equal distance from previous prime (491118473) and next prime (491118487).
It is a tau number, because it is divible by the number of its divisors (240).
It is a super-2 number, since 2×4911184802 = 482394722795020800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is not an unprimeable number, because it can be changed into a prime (491118487) 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, 897567 + ... + 898113.
It is an arithmetic number, because the mean of its divisors is an integer number (7287852).
Almost surely, 2491118480 is an apocalyptic number.
491118480 is a gapful number since it is divisible by the number (40) 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 491118480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (874542240).
491118480 is an abundant number, since it is smaller than the sum of its proper divisors (1257966000).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
491118480 is a wasteful number, since it uses less digits than its factorization.
491118480 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 638 (or 629 counting only the distinct ones).
The product of its (nonzero) digits is 9216, while the sum is 36.
The square root of 491118480 is about 22161.1931086754. The cubic root of 491118480 is about 788.9729108271.
The spelling of 491118480 in words is "four hundred ninety-one million, one hundred eighteen thousand, four hundred eighty".
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