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30643839108 = 2233409693739
BaseRepresentation
bin11100100010100000…
…111110000010000100
32221002121210022121000
4130202200332002010
51000224310322413
622024431453300
72133245222541
oct344240760204
987077708530
1030643839108
1111aa5714973
125b32687230
132b7489ca9c
1416a9b63bc8
15be5406073
hex72283e084

30643839108 has 48 divisors (see below), whose sum is σ = 79641352000. Its totient is φ = 10189623744.

The previous prime is 30643839101. The next prime is 30643839139. The reversal of 30643839108 is 80193834603.

It is not an unprimeable number, because it can be changed into a prime (30643839101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 302698 + ... + 391041.

Almost surely, 230643839108 is an apocalyptic number.

It is an amenable number.

30643839108 is an abundant number, since it is smaller than the sum of its proper divisors (48997512892).

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

30643839108 is a wasteful number, since it uses less digits than its factorization.

30643839108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694161 (or 694153 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 30643839108 in words is "thirty billion, six hundred forty-three million, eight hundred thirty-nine thousand, one hundred eight".

Divisors: 1 2 3 4 6 9 12 18 27 36 54 108 409 818 1227 1636 2454 3681 4908 7362 11043 14724 22086 44172 693739 1387478 2081217 2774956 4162434 6243651 8324868 12487302 18730953 24974604 37461906 74923812 283739251 567478502 851217753 1134957004 1702435506 2553653259 3404871012 5107306518 7660959777 10214613036 15321919554 30643839108