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2012202220 = 225719756467
BaseRepresentation
bin111011111101111…
…1100010011101100
312012020022110112011
41313323330103230
513110110432340
6531400251004
7100602302530
oct16773742354
95166273464
102012202220
11942921346
12481a70a64
13260b5a402
14151353bc0
15bb9c30ea
hex77efc4ec

2012202220 has 48 divisors (see below), whose sum is σ = 5083464960. Its totient is φ = 653586624.

The previous prime is 2012202209. The next prime is 2012202221. The reversal of 2012202220 is 222022102.

It is a self number, because there is not a number n which added to its sum of digits gives 2012202220.

It is not an unprimeable number, because it can be changed into a prime (2012202221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375574 + ... + 380893.

It is an arithmetic number, because the mean of its divisors is an integer number (105905520).

Almost surely, 22012202220 is an apocalyptic number.

2012202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2012202220 is an abundant number, since it is smaller than the sum of its proper divisors (3071262740).

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

2012202220 is a wasteful number, since it uses less digits than its factorization.

2012202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756502 (or 756500 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 2012202220 is about 44857.5770634126. The cubic root of 2012202220 is about 1262.4781621554.

Adding to 2012202220 its reverse (222022102), we get a palindrome (2234224322).

The spelling of 2012202220 in words is "two billion, twelve million, two hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 19 20 28 35 38 70 76 95 133 140 190 266 380 532 665 1330 2660 756467 1512934 3025868 3782335 5295269 7564670 10590538 14372873 15129340 21181076 26476345 28745746 52952690 57491492 71864365 100610111 105905380 143728730 201220222 287457460 402440444 503050555 1006101110 2012202220