Base | Representation |
---|---|
bin | 11101001111000… |
… | …101001111010000 |
3 | 1021011221121201222 |
4 | 131033011033100 |
5 | 2001031233010 |
6 | 120400544212 |
7 | 15104056253 |
oct | 3517051720 |
9 | 1234847658 |
10 | 490492880 |
11 | 231963619 |
12 | 118322068 |
13 | 7a806997 |
14 | 491dd09a |
15 | 2d0db355 |
hex | 1d3c53d0 |
490492880 has 40 divisors (see below), whose sum is σ = 1148745672. Its totient is φ = 194760704.
The previous prime is 490492867. The next prime is 490492883. The reversal of 490492880 is 88294094.
It is a happy number.
It can be written as a sum of positive squares in 4 ways, for example, as 37994896 + 452497984 = 6164^2 + 21272^2 .
It is a tau number, because it is divible by the number of its divisors (40).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (490492883) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11417 + ... + 33336.
Almost surely, 2490492880 is an apocalyptic number.
490492880 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
490492880 is an abundant number, since it is smaller than the sum of its proper divisors (658252792).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
490492880 is a wasteful number, since it uses less digits than its factorization.
490492880 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 44903 (or 44897 counting only the distinct ones).
The product of its (nonzero) digits is 165888, while the sum is 44.
The square root of 490492880 is about 22147.0738473506. The cubic root of 490492880 is about 788.6377634708.
The spelling of 490492880 in words is "four hundred ninety million, four hundred ninety-two thousand, eight hundred eighty".
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