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30808945468 = 2272414565641
BaseRepresentation
bin11100101100010110…
…110011001100111100
32221112010110120221101
4130230112303030330
51001044042223333
622053050342444
72140321500310
oct345426631474
987463416841
1030808945468
111207a934804
125b79a2aa24
132b9cb5a862
1416c3a61b40
15c04b6b67d
hex72c5b333c

30808945468 has 24 divisors (see below), whose sum is σ = 61873580384. Its totient is φ = 13149043200.

The previous prime is 30808945459. The next prime is 30808945471. The reversal of 30808945468 is 86454980803.

It is a super-2 number, since 2×308089454682 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2276073 + ... + 2289568.

Almost surely, 230808945468 is an apocalyptic number.

It is an amenable number.

30808945468 is an abundant number, since it is smaller than the sum of its proper divisors (31064634916).

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

30808945468 is a wasteful number, since it uses less digits than its factorization.

30808945468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565893 (or 4565891 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 30808945468 in words is "thirty billion, eight hundred eight million, nine hundred forty-five thousand, four hundred sixty-eight".

Divisors: 1 2 4 7 14 28 241 482 964 1687 3374 6748 4565641 9131282 18262564 31959487 63918974 127837948 1100319481 2200638962 4401277924 7702236367 15404472734 30808945468