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220220023 = 172762007
BaseRepresentation
bin11010010000001…
…00101001110111
3120100101100002011
431020010221313
5422334020043
633504025051
75312560612
oct1510045167
9510340064
10220220023
11103343621
1261902187
133681690a
1421367179
151450059d
hexd204a77

220220023 has 6 divisors (see below), whose sum is σ = 233936456. Its totient is φ = 207265632.

The previous prime is 220219991. The next prime is 220220053. The reversal of 220220023 is 320022022.

It is not a de Polignac number, because 220220023 - 25 = 220219991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220219985 and 220220012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220220053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 380715 + ... + 381292.

Almost surely, 2220220023 is an apocalyptic number.

220220023 is a deficient number, since it is larger than the sum of its proper divisors (13716433).

220220023 is an equidigital number, since it uses as much as digits as its factorization.

220220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762041 (or 762024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 220220023 is about 14839.8120944977. The cubic root of 220220023 is about 603.8822546892.

Adding to 220220023 its reverse (320022022), we get a palindrome (540242045).

The spelling of 220220023 in words is "two hundred twenty million, two hundred twenty thousand, twenty-three".

Divisors: 1 17 289 762007 12954119 220220023