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30112908128 = 251709550631
BaseRepresentation
bin11100000010110111…
…101000001101100000
32212201121202020012122
4130002313220031200
5443132401030003
621500024043412
72114140332032
oct340267501540
985647666178
1030112908128
1111852a51636
125a04903568
132abb8a8044
141659439c52
15bb39cd238
hex702de8360

30112908128 has 24 divisors (see below), whose sum is σ = 59319585360. Its totient is φ = 15047616640.

The previous prime is 30112908121. The next prime is 30112908139. The reversal of 30112908128 is 82180921103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30112908121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220628 + ... + 330003.

It is an arithmetic number, because the mean of its divisors is an integer number (2471649390).

Almost surely, 230112908128 is an apocalyptic number.

It is an amenable number.

30112908128 is a deficient number, since it is larger than the sum of its proper divisors (29206677232).

30112908128 is a wasteful number, since it uses less digits than its factorization.

30112908128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552350 (or 552342 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The spelling of 30112908128 in words is "thirty billion, one hundred twelve million, nine hundred eight thousand, one hundred twenty-eight".

Divisors: 1 2 4 8 16 32 1709 3418 6836 13672 27344 54688 550631 1101262 2202524 4405048 8810096 17620192 941028379 1882056758 3764113516 7528227032 15056454064 30112908128