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30787089048 = 23321273366917
BaseRepresentation
bin11100101011000011…
…011011001010011000
32221110121100011120100
4130223003123022120
51001022443322143
622050550055400
72136634640052
oct345303331230
987417304510
1030787089048
1112069566751
125b7264a560
132b98477471
1416c0bb28d2
15c02ca06d3
hex72b0db298

30787089048 has 48 divisors (see below), whose sum is σ = 84038273280. Its totient is φ = 10181553984.

The previous prime is 30787089041. The next prime is 30787089107. The reversal of 30787089048 is 84098078703.

It is a junction number, because it is equal to n+sod(n) for n = 30787088985 and 30787089003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30787089041) 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 11 ways as a sum of consecutive naturals, for example, 1674315 + ... + 1692602.

It is an arithmetic number, because the mean of its divisors is an integer number (1750797360).

Almost surely, 230787089048 is an apocalyptic number.

It is an amenable number.

30787089048 is an abundant number, since it is smaller than the sum of its proper divisors (53251184232).

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

30787089048 is a wasteful number, since it uses less digits than its factorization.

30787089048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367056 (or 3367049 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 30787089048 in words is "thirty billion, seven hundred eighty-seven million, eighty-nine thousand, forty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 127 254 381 508 762 1016 1143 1524 2286 3048 4572 9144 3366917 6733834 10100751 13467668 20201502 26935336 30302253 40403004 60604506 80806008 121209012 242418024 427598459 855196918 1282795377 1710393836 2565590754 3420787672 3848386131 5131181508 7696772262 10262363016 15393544524 30787089048