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490307578 = 21912902831
BaseRepresentation
bin11101001110010…
…111111111111010
31021011121012112221
4131032113333322
52001004320303
6120352554254
715102355105
oct3516277772
91234535487
10490307578
11231847382
1211825298a
137a770537
144919173c
152d0a14bd
hex1d397ffa

490307578 has 8 divisors (see below), whose sum is σ = 774169920. Its totient is φ = 232250940.

The previous prime is 490307539. The next prime is 490307579. The reversal of 490307578 is 875703094.

It is a happy number.

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 (490307579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6451378 + ... + 6451453.

It is an arithmetic number, because the mean of its divisors is an integer number (96771240).

Almost surely, 2490307578 is an apocalyptic number.

490307578 is a deficient number, since it is larger than the sum of its proper divisors (283862342).

490307578 is a wasteful number, since it uses less digits than its factorization.

490307578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12902852.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 490307578 is about 22142.8900101139. The cubic root of 490307578 is about 788.5384385078.

The spelling of 490307578 in words is "four hundred ninety million, three hundred seven thousand, five hundred seventy-eight".

Divisors: 1 2 19 38 12902831 25805662 245153789 490307578