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2220200220 = 223575286191
BaseRepresentation
bin1000010001010101…
…1001000100011100
312201201200212010210
42010111121010130
514021332401340
61004150332420
7106006250640
oct20425310434
95651625123
102220200220
11a3a277317
1251b65a110
13294c84c54
14170c18c20
15cedac180
hex8455911c

2220200220 has 48 divisors (see below), whose sum is σ = 7104642048. Its totient is φ = 507474240.

The previous prime is 2220200219. The next prime is 2220200231. The reversal of 2220200220 is 220020222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2220200196 and 2220200205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2642676 + ... + 2643515.

It is an arithmetic number, because the mean of its divisors is an integer number (148013376).

Almost surely, 22220200220 is an apocalyptic number.

2220200220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220200220 is an abundant number, since it is smaller than the sum of its proper divisors (4884441828).

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

2220200220 is a wasteful number, since it uses less digits than its factorization.

2220200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286210 (or 5286208 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2220200220 is about 47119.0006260744. Note that the first 3 decimals coincide. The cubic root of 2220200220 is about 1304.5599667311.

Adding to 2220200220 its reverse (220020222), we get a palindrome (2440220442).

The spelling of 2220200220 in words is "two billion, two hundred twenty million, two hundred thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 7 10 12 14 15 20 21 28 30 35 42 60 70 84 105 140 210 420 5286191 10572382 15858573 21144764 26430955 31717146 37003337 52861910 63434292 74006674 79292865 105723820 111010011 148013348 158585730 185016685 222020022 317171460 370033370 444040044 555050055 740066740 1110100110 2220200220