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30189245184 = 28337173127
BaseRepresentation
bin11100000111011010…
…110101001100000000
32212220221101112222000
4130013122311030000
5443311421321214
621511352144000
72116055231040
oct340732651400
985827345860
1030189245184
111189205080a
125a26398000
132b016550b7
14166562b720
15bba55b809
hex7076b5300

30189245184 has 576 divisors, whose sum is σ = 109257523200. Its totient is φ = 8054194176.

The previous prime is 30189245161. The next prime is 30189245209. The reversal of 30189245184 is 48154298103.

30189245184 is a `hidden beast` number, since 30 + 1 + 8 + 92 + 451 + 84 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×301892451842 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 237710529 + ... + 237710655.

It is an arithmetic number, because the mean of its divisors is an integer number (189683200).

Almost surely, 230189245184 is an apocalyptic number.

30189245184 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30189245184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54628761600).

30189245184 is an abundant number, since it is smaller than the sum of its proper divisors (79068278016).

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

30189245184 is an equidigital number, since it uses as much as digits as its factorization.

30189245184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 30189245184 in words is "thirty billion, one hundred eighty-nine million, two hundred forty-five thousand, one hundred eighty-four".