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30028186800 = 243252411311553
BaseRepresentation
bin11011111101110100…
…011100010010110000
32212111201022221101200
4123331310130102300
5442444203434200
621443400131200
72112061243053
oct337564342260
985451287350
1030028186800
111180a146207
1259a0466b00
132aa7183991
14164c0a4a9a
15bab345800
hex6fdd1c4b0

30028186800 has 360 divisors, whose sum is σ = 107631892368. Its totient is φ = 7747584000.

The previous prime is 30028186753. The next prime is 30028186817. The reversal of 30028186800 is 868182003.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 19334824 + ... + 19336376.

Almost surely, 230028186800 is an apocalyptic number.

30028186800 is a gapful number since it is divisible by the number (30) 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 30028186800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53815946184).

30028186800 is an abundant number, since it is smaller than the sum of its proper divisors (77603705568).

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

30028186800 is a wasteful number, since it uses less digits than its factorization.

30028186800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749 (or 1735 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 30028186800 in words is "thirty billion, twenty-eight million, one hundred eighty-six thousand, eight hundred".