Base | Representation |
---|---|
bin | 11010010101000… |
… | …00100001111011 |
3 | 120101120202220010 |
4 | 31022200201323 |
5 | 423014432431 |
6 | 33525433003 |
7 | 5321160210 |
oct | 1512404173 |
9 | 511522803 |
10 | 220858491 |
11 | 10373a287 |
12 | 61b6b763 |
13 | 369ab3c9 |
14 | 21491b07 |
15 | 145c9846 |
hex | d2a087b |
220858491 has 16 divisors (see below), whose sum is σ = 342065408. Its totient is φ = 124135200.
The previous prime is 220858481. The next prime is 220858501. The reversal of 220858491 is 194858022.
It is an interprime number because it is at equal distance from previous prime (220858481) and next prime (220858501).
It is not a de Polignac number, because 220858491 - 218 = 220596347 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (220858411) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84925 + ... + 87486.
It is an arithmetic number, because the mean of its divisors is an integer number (21379088).
Almost surely, 2220858491 is an apocalyptic number.
220858491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
220858491 is a deficient number, since it is larger than the sum of its proper divisors (121206917).
220858491 is a wasteful number, since it uses less digits than its factorization.
220858491 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 172482.
The product of its (nonzero) digits is 46080, while the sum is 39.
The square root of 220858491 is about 14861.3085224687. The cubic root of 220858491 is about 604.4652889972.
The spelling of 220858491 in words is "two hundred twenty million, eight hundred fifty-eight thousand, four hundred ninety-one".
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