Base | Representation |
---|---|
bin | 11101001110000… |
… | …111001101010101 |
3 | 1021011110201012210 |
4 | 131032013031111 |
5 | 2001000120210 |
6 | 120351304033 |
7 | 15101650440 |
oct | 3516071525 |
9 | 1234421183 |
10 | 490238805 |
11 | 2317aa741 |
12 | 11821b019 |
13 | 7a748144 |
14 | 49174657 |
15 | 2d08ae20 |
hex | 1d387355 |
490238805 has 32 divisors (see below), whose sum is σ = 925360128. Its totient is φ = 216878400.
The previous prime is 490238773. The next prime is 490238807. The reversal of 490238805 is 508832094.
It is a happy number.
It is not a de Polignac number, because 490238805 - 25 = 490238773 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (490238807) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72051 + ... + 78560.
It is an arithmetic number, because the mean of its divisors is an integer number (28917504).
Almost surely, 2490238805 is an apocalyptic number.
It is an amenable number.
490238805 is a deficient number, since it is larger than the sum of its proper divisors (435121323).
490238805 is a wasteful number, since it uses less digits than its factorization.
490238805 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 150657.
The product of its (nonzero) digits is 69120, while the sum is 39.
The square root of 490238805 is about 22141.3370192498. The cubic root of 490238805 is about 788.5015686652.
The spelling of 490238805 in words is "four hundred ninety million, two hundred thirty-eight thousand, eight hundred five".
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