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20020023223 = 85926098933
BaseRepresentation
bin10010101001010010…
…010100111110110111
31220200020012112221121
4102221102110332313
5312000111220343
613110322324411
71306054250434
oct225122247667
956606175847
1020020023223
118543865842
123a687b9707
131b708987b5
14d7cc18b8b
157c28c3aed
hex4a9494fb7

20020023223 has 8 divisors (see below), whose sum is σ = 20053256400. Its totient is φ = 19986814848.

The previous prime is 20020023197. The next prime is 20020023253. The reversal of 20020023223 is 32232002002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-20020023223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020023197 and 20020023206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020023253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2236665 + ... + 2245597.

It is an arithmetic number, because the mean of its divisors is an integer number (2506657050).

Almost surely, 220020023223 is an apocalyptic number.

20020023223 is a deficient number, since it is larger than the sum of its proper divisors (33233177).

20020023223 is an equidigital number, since it uses as much as digits as its factorization.

20020023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12401.

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

Adding to 20020023223 its reverse (32232002002), we get a palindrome (52252025225).

The spelling of 20020023223 in words is "twenty billion, twenty million, twenty-three thousand, two hundred twenty-three".

Divisors: 1 859 2609 8933 2241131 7673447 23306197 20020023223