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30213030220 = 22514431104681
BaseRepresentation
bin11100001000110101…
…100100000101001100
32212222121010221220021
4130020311210011030
5443334013431340
621514002031524
72116464343132
oct341065440514
985877127807
1030213030220
11118a451686a
125a323485a4
132b06562299
14166885d752
15bbc6a8e4a
hex708d6414c

30213030220 has 24 divisors (see below), whose sum is σ = 63452366208. Its totient is φ = 12084259200.

The previous prime is 30213030209. The next prime is 30213030223. The reversal of 30213030220 is 2203031203.

It is a junction number, because it is equal to n+sod(n) for n = 30213030194 and 30213030203.

It is not an unprimeable number, because it can be changed into a prime (30213030223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236280 + ... + 340960.

It is an arithmetic number, because the mean of its divisors is an integer number (2643848592).

Almost surely, 230213030220 is an apocalyptic number.

It is an amenable number.

30213030220 is an abundant number, since it is smaller than the sum of its proper divisors (33239335988).

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

30213030220 is a wasteful number, since it uses less digits than its factorization.

30213030220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119121 (or 119119 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30213030220 its reverse (2203031203), we get a palindrome (32416061423).

The spelling of 30213030220 in words is "thirty billion, two hundred thirteen million, thirty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 14431 28862 57724 72155 104681 144310 209362 288620 418724 523405 1046810 2093620 1510651511 3021303022 6042606044 7553257555 15106515110 30213030220