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30668284848 = 2436121134957
BaseRepresentation
bin11100100011111110…
…001110001110110000
32221011022210021211210
4130203332032032300
51000302040103343
622031103440120
72133663056115
oct344376161660
987138707753
1030668284848
11120084a1363
125b3a8b6040
132b7997b916
1416ad0c890c
15be7634333
hex723f8e3b0

30668284848 has 80 divisors (see below), whose sum is σ = 80579557856. Its totient is φ = 10048389120.

The previous prime is 30668284837. The next prime is 30668284849. The reversal of 30668284848 is 84848286603.

It is not an unprimeable number, because it can be changed into a prime (30668284849) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6184386 + ... + 6189342.

Almost surely, 230668284848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30668284848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40289778928).

30668284848 is an abundant number, since it is smaller than the sum of its proper divisors (49911273008).

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

30668284848 is a wasteful number, since it uses less digits than its factorization.

30668284848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 14155776, while the sum is 57.

The spelling of 30668284848 in words is "thirty billion, six hundred sixty-eight million, two hundred eighty-four thousand, eight hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 61 122 183 244 366 488 732 976 1464 2113 2928 4226 4957 6339 8452 9914 12678 14871 16904 19828 25356 29742 33808 39656 50712 59484 79312 101424 118968 128893 237936 257786 302377 386679 515572 604754 773358 907131 1031144 1209508 1546716 1814262 2062288 2419016 3093432 3628524 4838032 6186864 7257048 10474141 14514096 20948282 31422423 41896564 62844846 83793128 125689692 167586256 251379384 502758768 638922601 1277845202 1916767803 2555690404 3833535606 5111380808 7667071212 10222761616 15334142424 30668284848