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6494948780 = 2251051308989
BaseRepresentation
bin1100000110010000…
…10000110110101100
3121202122101120202112
412003020100312230
5101300201330110
62552253143152
7316644103505
oct60310206654
917678346675
106494948780
112833258171
12131318aab8
137c67a2978
1445884bbac
15280304405
hex183210dac

6494948780 has 24 divisors (see below), whose sum is σ = 13652414160. Its totient is φ = 2595499200.

The previous prime is 6494948737. The next prime is 6494948833. The reversal of 6494948780 is 878494946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133475 + ... + 175514.

It is an arithmetic number, because the mean of its divisors is an integer number (568850590).

Almost surely, 26494948780 is an apocalyptic number.

It is an amenable number.

6494948780 is an abundant number, since it is smaller than the sum of its proper divisors (7157465380).

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

6494948780 is a wasteful number, since it uses less digits than its factorization.

6494948780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310049 (or 310047 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The square root of 6494948780 is about 80591.2450580086. The cubic root of 6494948780 is about 1865.7720240258.

The spelling of 6494948780 in words is "six billion, four hundred ninety-four million, nine hundred forty-eight thousand, seven hundred eighty".

Divisors: 1 2 4 5 10 20 1051 2102 4204 5255 10510 21020 308989 617978 1235956 1544945 3089890 6179780 324747439 649494878 1298989756 1623737195 3247474390 6494948780