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30022030420 = 2251501101521
BaseRepresentation
bin11011111101011100…
…111101010001010100
32212111021202011102121
4123331130331101110
5442441114433140
621443020145324
72111655022324
oct337534752124
985437664377
1030022030420
1111806720898
12599a398244
132aa5b09755
14164b341284
15baaa2b64a
hex6fd73d454

30022030420 has 12 divisors (see below), whose sum is σ = 63046263924. Its totient is φ = 12008812160.

The previous prime is 30022030411. The next prime is 30022030421. The reversal of 30022030420 is 2403022003.

It can be written as a sum of positive squares in 2 ways, for example, as 22995902736 + 7026127684 = 151644^2 + 83822^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30022030394 and 30022030403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30022030421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 750550741 + ... + 750550780.

It is an arithmetic number, because the mean of its divisors is an integer number (5253855327).

Almost surely, 230022030420 is an apocalyptic number.

It is an amenable number.

30022030420 is an abundant number, since it is smaller than the sum of its proper divisors (33024233504).

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

30022030420 is a wasteful number, since it uses less digits than its factorization.

30022030420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501101530 (or 1501101528 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

Adding to 30022030420 its reverse (2403022003), we get a palindrome (32425052423).

The spelling of 30022030420 in words is "thirty billion, twenty-two million, thirty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 1501101521 3002203042 6004406084 7505507605 15011015210 30022030420