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490287742 = 27195413407
BaseRepresentation
bin11101001110010…
…011001001111110
31021011120012100021
4131032103021332
52001003201432
6120352322354
715102243220
oct3516231176
91234505307
10490287742
1123183348a
121182433ba
137a7644b9
1449188410
152d09a697
hex1d39327e

490287742 has 32 divisors (see below), whose sum is σ = 886625280. Its totient is φ = 198637920.

The previous prime is 490287719. The next prime is 490287767. The reversal of 490287742 is 247782094.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142203 + ... + 145609.

It is an arithmetic number, because the mean of its divisors is an integer number (27707040).

Almost surely, 2490287742 is an apocalyptic number.

490287742 is a deficient number, since it is larger than the sum of its proper divisors (396337538).

490287742 is a wasteful number, since it uses less digits than its factorization.

490287742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976.

The product of its (nonzero) digits is 225792, while the sum is 43.

The square root of 490287742 is about 22142.4420965710. The cubic root of 490287742 is about 788.5278045982.

The spelling of 490287742 in words is "four hundred ninety million, two hundred eighty-seven thousand, seven hundred forty-two".

Divisors: 1 2 7 14 19 38 133 266 541 1082 3407 3787 6814 7574 10279 20558 23849 47698 64733 71953 129466 143906 453131 906262 1843187 3686374 12902309 25804618 35020553 70041106 245143871 490287742