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30434220220 = 2251997646789
BaseRepresentation
bin11100010110000001…
…010101100010111100
32220120000100120112111
4130112001111202330
5444312130021340
621551542543404
72125121414005
oct342601254274
986500316474
1030434220220
11119a8362118
125a94437b64
132b40328541
141689d9a1ac
15bd1cebaea
hex7160558bc

30434220220 has 24 divisors (see below), whose sum is σ = 64233036000. Its totient is φ = 12112512192.

The previous prime is 30434220169. The next prime is 30434220221. The reversal of 30434220220 is 2202243403.

It is a junction number, because it is equal to n+sod(n) for n = 30434220191 and 30434220200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30434220221) 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, 3819415 + ... + 3827374.

It is an arithmetic number, because the mean of its divisors is an integer number (2676376500).

Almost surely, 230434220220 is an apocalyptic number.

It is an amenable number.

30434220220 is an abundant number, since it is smaller than the sum of its proper divisors (33798815780).

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

30434220220 is a wasteful number, since it uses less digits than its factorization.

30434220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7646997 (or 7646995 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 30434220220 its reverse (2202243403), we get a palindrome (32636463623).

The spelling of 30434220220 in words is "thirty billion, four hundred thirty-four million, two hundred twenty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 199 398 796 995 1990 3980 7646789 15293578 30587156 38233945 76467890 152935780 1521711011 3043422022 6086844044 7608555055 15217110110 30434220220