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20310022 = 231327581
BaseRepresentation
bin100110101111…
…0100000000110
31102012212010001
41031132200012
520144410042
62003151514
7334426615
oct115364006
942185101
1020310022
1110512247
12697559a
134291585
1429a987c
151bb2bb7
hex135e806

20310022 has 8 divisors (see below), whose sum is σ = 31447872. Its totient is φ = 9827400.

The previous prime is 20310007. The next prime is 20310023. The reversal of 20310022 is 22001302.

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

It is a junction number, because it is equal to n+sod(n) for n = 20309990 and 20310008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310023) 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 3 ways as a sum of consecutive naturals, for example, 163729 + ... + 163852.

It is an arithmetic number, because the mean of its divisors is an integer number (3930984).

Almost surely, 220310022 is an apocalyptic number.

20310022 is a deficient number, since it is larger than the sum of its proper divisors (11137850).

20310022 is a wasteful number, since it uses less digits than its factorization.

20310022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327614.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20310022 is about 4506.6641765279. The cubic root of 20310022 is about 272.8371250461.

Adding to 20310022 its reverse (22001302), we get a palindrome (42311324).

The spelling of 20310022 in words is "twenty million, three hundred ten thousand, twenty-two".

Divisors: 1 2 31 62 327581 655162 10155011 20310022