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30384868190 = 257142795589
BaseRepresentation
bin11100010011000101…
…000100101101011110
32220102120111020021112
4130103011010231132
5444212011240230
621543021102022
72123652055355
oct342305045536
986376436245
1030384868190
1111982514216
125a7b9b7912
132b33039061
1416835d099c
15bcc7edd95
hex713144b5e

30384868190 has 16 divisors (see below), whose sum is σ = 55463084640. Its totient is φ = 11982764640.

The previous prime is 30384868181. The next prime is 30384868219. The reversal of 30384868190 is 9186848303.

It is a super-2 number, since 2×303848681902 (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

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, 21397085 + ... + 21398504.

It is an arithmetic number, because the mean of its divisors is an integer number (3466442790).

Almost surely, 230384868190 is an apocalyptic number.

30384868190 is a deficient number, since it is larger than the sum of its proper divisors (25078216450).

30384868190 is a wasteful number, since it uses less digits than its factorization.

30384868190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42795667.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 30384868190 in words is "thirty billion, three hundred eighty-four million, eight hundred sixty-eight thousand, one hundred ninety".

Divisors: 1 2 5 10 71 142 355 710 42795589 85591178 213977945 427955890 3038486819 6076973638 15192434095 30384868190