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220022020 = 22522748463
BaseRepresentation
bin11010001110101…
…00010100000100
3120100000021110201
431013110110010
5422311201040
633455500244
75311104421
oct1507242404
9510007421
10220022020
11103218889
1261827684
133677775a
1421314d48
15144b1a9a
hexd1d4504

220022020 has 24 divisors (see below), whose sum is σ = 464091264. Its totient is φ = 87619296.

The previous prime is 220022009. The next prime is 220022021. The reversal of 220022020 is 20220022.

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 = 220021988 and 220022006.

It is not an unprimeable number, because it can be changed into a prime (220022021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19692 + ... + 28771.

It is an arithmetic number, because the mean of its divisors is an integer number (19337136).

Almost surely, 2220022020 is an apocalyptic number.

220022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220022020 is an abundant number, since it is smaller than the sum of its proper divisors (244069244).

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

220022020 is a wasteful number, since it uses less digits than its factorization.

220022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48699 (or 48697 counting only the distinct ones).

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

The square root of 220022020 is about 14833.1392496666. The cubic root of 220022020 is about 603.7012140037.

Adding to 220022020 its reverse (20220022), we get a palindrome (240242042).

The spelling of 220022020 in words is "two hundred twenty million, twenty-two thousand, twenty".

Divisors: 1 2 4 5 10 20 227 454 908 1135 2270 4540 48463 96926 193852 242315 484630 969260 11001101 22002202 44004404 55005505 110011010 220022020