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30213000320 = 27547207813
BaseRepresentation
bin11100001000110101…
…011100110010000000
32212222121002102212212
4130020311130302000
5443334012002240
621514001241252
72116464160016
oct341065346200
985877072785
1030213000320
11118a44a6358
125a32333228
132b065517a9
1416688528b6
15bbc6a0165
hex708d5cc80

30213000320 has 32 divisors (see below), whose sum is σ = 72227955420. Its totient is φ = 12085199872.

The previous prime is 30213000263. The next prime is 30213000331. The reversal of 30213000320 is 2300031203.

It can be written as a sum of positive squares in 2 ways, for example, as 30161963584 + 51036736 = 173672^2 + 7144^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 30213000295 and 30213000304.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23603267 + ... + 23604546.

Almost surely, 230213000320 is an apocalyptic number.

It is an amenable number.

30213000320 is an abundant number, since it is smaller than the sum of its proper divisors (42014955100).

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

30213000320 is an equidigital number, since it uses as much as digits as its factorization.

30213000320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47207832 (or 47207820 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 30213000320 its reverse (2300031203), we get a palindrome (32513031523).

The spelling of 30213000320 in words is "thirty billion, two hundred thirteen million, three hundred twenty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 47207813 94415626 188831252 236039065 377662504 472078130 755325008 944156260 1510650016 1888312520 3021300032 3776625040 6042600064 7553250080 15106500160 30213000320