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20000230221 = 323289858409
BaseRepresentation
bin10010101000000110…
…110100101101001101
31220121211221222001110
4102220012310231031
5311430024331341
613104334202233
71305424103046
oct225006645515
956554858043
1020000230221
118533676a94
123a62053379
131b6975866a
14d7a3458cd
157c0cb4216
hex4a81b4b4d

20000230221 has 8 divisors (see below), whose sum is σ = 27826407360. Its totient is φ = 12753769952.

The previous prime is 20000230199. The next prime is 20000230223. The reversal of 20000230221 is 12203200002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20000230221 - 213 = 20000222029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20000230197 and 20000230206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000230223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144929136 + ... + 144929273.

It is an arithmetic number, because the mean of its divisors is an integer number (3478300920).

Almost surely, 220000230221 is an apocalyptic number.

It is an amenable number.

20000230221 is a deficient number, since it is larger than the sum of its proper divisors (7826177139).

20000230221 is a wasteful number, since it uses less digits than its factorization.

20000230221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289858435.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20000230221 its reverse (12203200002), we get a palindrome (32203430223).

The spelling of 20000230221 in words is "twenty billion, two hundred thirty thousand, two hundred twenty-one".

Divisors: 1 3 23 69 289858409 869575227 6666743407 20000230221