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2120302220 = 225179676449
BaseRepresentation
bin111111001100001…
…0011111010001100
312110202201111211212
41332120103322030
513320244132340
6550221233552
7103354162061
oct17630237214
95422644755
102120302220
11998945493
124b21028b8
1327a3789ca
14161852c68
15c6227a65
hex7e613e8c

2120302220 has 48 divisors (see below), whose sum is σ = 4720161600. Its totient is φ = 797282304.

The previous prime is 2120302199. The next prime is 2120302229. The reversal of 2120302220 is 222030212.

Adding to 2120302220 its reverse (222030212), we get a palindrome (2342332432).

It is a junction number, because it is equal to n+sod(n) for n = 2120302195 and 2120302204.

It is not an unprimeable number, because it can be changed into a prime (2120302229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 325556 + ... + 332004.

It is an arithmetic number, because the mean of its divisors is an integer number (98336700).

Almost surely, 22120302220 is an apocalyptic number.

2120302220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120302220 is an abundant number, since it is smaller than the sum of its proper divisors (2599859380).

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

2120302220 is a wasteful number, since it uses less digits than its factorization.

2120302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7442 (or 7440 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2120302220 is about 46046.7395154098. The cubic root of 2120302220 is about 1284.6926990540.

The spelling of 2120302220 in words is "two billion, one hundred twenty million, three hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 967 1934 3868 4835 6449 9670 12898 16439 19340 25796 32245 32878 64490 65756 82195 109633 128980 164390 219266 328780 438532 548165 1096330 2192660 6236183 12472366 24944732 31180915 62361830 106015111 124723660 212030222 424060444 530075555 1060151110 2120302220