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30307220000 = 255412312
BaseRepresentation
bin11100001110011100…
…110111101000100000
32220020011101021222122
4130032130313220200
5444032122020000
621531204523412
72122020055661
oct341634675040
986204337878
1030307220000
11119426a9a62
125a599b0568
132b1cc20295
14167717b368
15bc5ab2085
hex70e737a20

30307220000 has 90 divisors (see below), whose sum is σ = 74620925379. Its totient is φ = 12113040000.

The previous prime is 30307219951. The next prime is 30307220051. The reversal of 30307220000 is 2270303.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 3 ways, for example, as 7007029264 + 23300190736 = 83708^2 + 152644^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=123100.

It is a Duffinian 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 14 ways as a sum of consecutive naturals, for example, 24619385 + ... + 24620615.

Almost surely, 230307220000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30307220000

30307220000 is an abundant number, since it is smaller than the sum of its proper divisors (44313705379).

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

30307220000 is an frugal number, since it uses more digits than its factorization.

30307220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 1238 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

Adding to 30307220000 its reverse (2270303), we get a palindrome (30309490303).

The spelling of 30307220000 in words is "thirty billion, three hundred seven million, two hundred twenty thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 80 100 125 160 200 250 400 500 625 800 1000 1231 1250 2000 2462 2500 4000 4924 5000 6155 9848 10000 12310 19696 20000 24620 30775 39392 49240 61550 98480 123100 153875 196960 246200 307750 492400 615500 769375 984800 1231000 1515361 1538750 2462000 3030722 3077500 4924000 6061444 6155000 7576805 12122888 12310000 15153610 24245776 24620000 30307220 37884025 48491552 60614440 75768050 121228880 151536100 189420125 242457760 303072200 378840250 606144400 757680500 947100625 1212288800 1515361000 1894201250 3030722000 3788402500 6061444000 7576805000 15153610000 30307220000