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30900222842 = 21931157167077
BaseRepresentation
bin11100110001110010…
…111111101101111010
32221202111012221221212
4130301302333231322
51001240424112332
622110111003122
72142510363146
oct346162775572
987674187855
1030900222842
1112117408855
125ba45094a2
132bb5a39038
1416d1c22226
15c0cb9b8b2
hex731cbfb7a

30900222842 has 32 divisors (see below), whose sum is σ = 50684782080. Its totient is φ = 14074482240.

The previous prime is 30900222841. The next prime is 30900222851. The reversal of 30900222842 is 24822200903.

It is a junction number, because it is equal to n+sod(n) for n = 30900222799 and 30900222808.

It is not an unprimeable number, because it can be changed into a prime (30900222841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101408 + ... + 268484.

It is an arithmetic number, because the mean of its divisors is an integer number (1583899440).

Almost surely, 230900222842 is an apocalyptic number.

30900222842 is a deficient number, since it is larger than the sum of its proper divisors (19784559238).

30900222842 is a wasteful number, since it uses less digits than its factorization.

30900222842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167286.

The product of its (nonzero) digits is 13824, while the sum is 32.

The spelling of 30900222842 in words is "thirty billion, nine hundred million, two hundred twenty-two thousand, eight hundred forty-two".

Divisors: 1 2 19 31 38 62 157 314 589 1178 2983 4867 5966 9734 92473 167077 184946 334154 3174463 5179387 6348926 10358774 26231089 52462178 98408353 196816706 498390691 813163759 996781382 1626327518 15450111421 30900222842