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30689965340 = 2254137426787
BaseRepresentation
bin11100100101010000…
…111011010100011100
32221012211120202212222
4130211100323110130
51000323112342330
622033200244512
72134345254416
oct344520732434
987184522788
1030689965340
111201975a221
125b46010738
132b812ccc08
1416b1d2d9b6
15be94b80e5
hex72543b51c

30689965340 has 24 divisors (see below), whose sum is σ = 66020854032. Its totient is φ = 11976571520.

The previous prime is 30689965303. The next prime is 30689965357. The reversal of 30689965340 is 4356998603.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18712574 + ... + 18714213.

It is an arithmetic number, because the mean of its divisors is an integer number (2750868918).

Almost surely, 230689965340 is an apocalyptic number.

It is an amenable number.

30689965340 is an abundant number, since it is smaller than the sum of its proper divisors (35330888692).

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

30689965340 is a wasteful number, since it uses less digits than its factorization.

30689965340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37426837 (or 37426835 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 30689965340 in words is "thirty billion, six hundred eighty-nine million, nine hundred sixty-five thousand, three hundred forty".

Divisors: 1 2 4 5 10 20 41 82 164 205 410 820 37426787 74853574 149707148 187133935 374267870 748535740 1534498267 3068996534 6137993068 7672491335 15344982670 30689965340