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2222000020 = 225313583871
BaseRepresentation
bin1000010001110001…
…0000011110010100
312201212002022000001
42010130100132110
514022313000040
61004253101044
7106030455112
oct20434203624
95655068001
102222000020
11a40296559
12520187784
13295465216
14171166ab2
15d011559a
hex84710794

2222000020 has 24 divisors (see below), whose sum is σ = 4816723968. Its totient is φ = 860128800.

The previous prime is 2221999951. The next prime is 2222000029. The reversal of 2222000020 is 200002222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 2221999970 and 2222000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222000029) 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, 1791316 + ... + 1792555.

It is an arithmetic number, because the mean of its divisors is an integer number (200696832).

Almost surely, 22222000020 is an apocalyptic number.

2222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2222000020 is an abundant number, since it is smaller than the sum of its proper divisors (2594723948).

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

2222000020 is a wasteful number, since it uses less digits than its factorization.

2222000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3583911 (or 3583909 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2222000020 is about 47138.0952097133. The cubic root of 2222000020 is about 1304.9123843254.

Adding to 2222000020 its reverse (200002222), we get a palindrome (2422002242).

The spelling of 2222000020 in words is "two billion, two hundred twenty-two million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 3583871 7167742 14335484 17919355 35838710 71677420 111100001 222200002 444400004 555500005 1111000010 2222000020