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30385081600 = 28524747669
BaseRepresentation
bin11100010011000101…
…111000110100000000
32220102120220002000121
4130103011320310000
5444212040102400
621543025430024
72123653634506
oct342305706400
986376802017
1030385081600
111198264a595
125a7ba9b314
132b330b2233
141683648676
15bcc84221a
hex713178d00

30385081600 has 54 divisors (see below), whose sum is σ = 75207840470. Its totient is φ = 12154030080.

The previous prime is 30385081543. The next prime is 30385081619. The reversal of 30385081600 is 618058303.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 292546816 + 30092534784 = 17104^2 + 173472^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2367435 + ... + 2380234.

Almost surely, 230385081600 is an apocalyptic number.

It is an amenable number.

30385081600 is an abundant number, since it is smaller than the sum of its proper divisors (44822758870).

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

30385081600 is an equidigital number, since it uses as much as digits as its factorization.

30385081600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747695 (or 4747676 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 30385081600 in words is "thirty billion, three hundred eighty-five million, eighty-one thousand, six hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 256 320 400 640 800 1280 1600 3200 6400 4747669 9495338 18990676 23738345 37981352 47476690 75962704 94953380 118691725 151925408 189906760 237383450 303850816 379813520 474766900 607701632 759627040 949533800 1215403264 1519254080 1899067600 3038508160 3798135200 6077016320 7596270400 15192540800 30385081600