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490872986 = 21072293799
BaseRepresentation
bin11101010000100…
…010000010011010
31021012122221010222
4131100202002122
52001130413421
6120413040042
715110231402
oct3520420232
91235587128
10490872986
112320a315a
12118486022
137a90a9b6
144929b802
152d163cab
hex1d42209a

490872986 has 8 divisors (see below), whose sum is σ = 743191200. Its totient is φ = 243142588.

The previous prime is 490872959. The next prime is 490872989. The reversal of 490872986 is 689278094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (490872989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146686 + ... + 1147113.

It is an arithmetic number, because the mean of its divisors is an integer number (92898900).

Almost surely, 2490872986 is an apocalyptic number.

490872986 is a deficient number, since it is larger than the sum of its proper divisors (252318214).

490872986 is a wasteful number, since it uses less digits than its factorization.

490872986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2293908.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 490872986 is about 22155.6535899982. The cubic root of 490872986 is about 788.8414283673.

The spelling of 490872986 in words is "four hundred ninety million, eight hundred seventy-two thousand, nine hundred eighty-six".

Divisors: 1 2 107 214 2293799 4587598 245436493 490872986