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489078031 = 13191980073
BaseRepresentation
bin11101001001101…
…011110100001111
31021002021201221011
4131021223310033
52000200444111
6120310350051
715056044321
oct3511536417
91232251834
10489078031
11231087622
1211795b327
137a42c9b0
1448d51611
152ce0c021
hex1d26bd0f

489078031 has 8 divisors (see below), whose sum is σ = 554420720. Its totient is φ = 427695552.

The previous prime is 489078013. The next prime is 489078043. The reversal of 489078031 is 130870984.

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

It is a cyclic number.

It is not a de Polignac number, because 489078031 - 25 = 489077999 is a prime.

It is a super-2 number, since 2×4890780312 = 478394640813673922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489078071) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 989790 + ... + 990283.

It is an arithmetic number, because the mean of its divisors is an integer number (69302590).

Almost surely, 2489078031 is an apocalyptic number.

489078031 is a deficient number, since it is larger than the sum of its proper divisors (65342689).

489078031 is a wasteful number, since it uses less digits than its factorization.

489078031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980105.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 489078031 is about 22115.1086590141. The cubic root of 489078031 is about 787.8787460410.

The spelling of 489078031 in words is "four hundred eighty-nine million, seventy-eight thousand, thirty-one".

Divisors: 1 13 19 247 1980073 25740949 37621387 489078031