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478830980 = 22523941549
BaseRepresentation
bin11100100010100…
…110000110000100
31020101000010121202
4130202212012010
51440040042410
6115303002032
714602665455
oct3442460604
91211003552
10478830980
11226318891
12114439318
1378282854
144784512c
152c085ca5
hex1c8a6184

478830980 has 12 divisors (see below), whose sum is σ = 1005545100. Its totient is φ = 191532384.

The previous prime is 478830973. The next prime is 478830983. The reversal of 478830980 is 89038874.

It can be written as a sum of positive squares in 2 ways, for example, as 382280704 + 96550276 = 19552^2 + 9826^2 .

It is not an unprimeable number, because it can be changed into a prime (478830983) 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, 11970755 + ... + 11970794.

It is an arithmetic number, because the mean of its divisors is an integer number (83795425).

Almost surely, 2478830980 is an apocalyptic number.

It is an amenable number.

478830980 is an abundant number, since it is smaller than the sum of its proper divisors (526714120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478830980 is a wasteful number, since it uses less digits than its factorization.

478830980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23941558 (or 23941556 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 478830980 is about 21882.2069270903. The cubic root of 478830980 is about 782.3373783804.

The spelling of 478830980 in words is "four hundred seventy-eight million, eight hundred thirty thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 23941549 47883098 95766196 119707745 239415490 478830980