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222020323 = 72171791489
BaseRepresentation
bin11010011101111…
…00001011100011
3120110202210121221
431032330023203
5423314122243
634010355511
75334066400
oct1516741343
9513683557
10222020323
11104363178
126242bb97
1336cc7195
14216b52a7
1514758bed
hexd3bc2e3

222020323 has 24 divisors (see below), whose sum is σ = 275173200. Its totient is φ = 177988608.

The previous prime is 222020303. The next prime is 222020329. The reversal of 222020323 is 323020222.

It is not a de Polignac number, because 222020323 - 217 = 221889251 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222020297 and 222020306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222020329) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148363 + ... + 149851.

It is an arithmetic number, because the mean of its divisors is an integer number (11465550).

Almost surely, 2222020323 is an apocalyptic number.

222020323 is a deficient number, since it is larger than the sum of its proper divisors (53152877).

222020323 is a wasteful number, since it uses less digits than its factorization.

222020323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699 (or 1692 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 222020323 is about 14900.3464053692. The cubic root of 222020323 is about 605.5233710783.

Adding to 222020323 its reverse (323020222), we get a palindrome (545040545).

The spelling of 222020323 in words is "two hundred twenty-two million, twenty thousand, three hundred twenty-three".

Divisors: 1 7 17 49 119 179 833 1253 1489 3043 8771 10423 21301 25313 72961 149107 177191 266531 1240337 1865717 4531027 13060019 31717189 222020323