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30788837968 = 24735610211
BaseRepresentation
bin11100101011001010…
…000110001001010000
32221110201122000122011
4130223022012021100
51001023420303333
622051051352304
72136655543000
oct345312061120
987421560564
1030788837968
111206a550739
125b73152694
132b9893a525
1416c110a000
15c02ee89cd
hex72b286250

30788837968 has 40 divisors (see below), whose sum is σ = 69566628800. Its totient is φ = 13195213920.

The previous prime is 30788837873. The next prime is 30788837977. The reversal of 30788837968 is 86973888703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799618 + ... + 2810593.

It is an arithmetic number, because the mean of its divisors is an integer number (1739165720).

Almost surely, 230788837968 is an apocalyptic number.

It is an amenable number.

30788837968 is an abundant number, since it is smaller than the sum of its proper divisors (38777790832).

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

30788837968 is an equidigital number, since it uses as much as digits as its factorization.

30788837968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610240 (or 5610220 counting only the distinct ones).

The product of its (nonzero) digits is 97542144, while the sum is 67.

The spelling of 30788837968 in words is "thirty billion, seven hundred eighty-eight million, eight hundred thirty-seven thousand, nine hundred sixty-eight".

Divisors: 1 2 4 7 8 14 16 28 49 56 98 112 196 343 392 686 784 1372 2744 5488 5610211 11220422 22440844 39271477 44881688 78542954 89763376 157085908 274900339 314171816 549800678 628343632 1099601356 1924302373 2199202712 3848604746 4398405424 7697209492 15394418984 30788837968