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20012022 = 23541177
BaseRepresentation
bin100110001010…
…1101111110110
31101122201100000
41030111233312
520110341042
61552532130
7332046042
oct114255766
941581300
1020012022
1110329368
126851046
1341b8a44
14292d022
151b5474c
hex1315bf6

20012022 has 24 divisors (see below), whose sum is σ = 44966376. Its totient is φ = 6670512.

The previous prime is 20012011. The next prime is 20012023. The reversal of 20012022 is 22021002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20011995 and 20012013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20103 + ... + 21074.

It is an arithmetic number, because the mean of its divisors is an integer number (1873599).

Almost surely, 220012022 is an apocalyptic number.

20012022 is an abundant number, since it is smaller than the sum of its proper divisors (24954354).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012022 is an equidigital number, since it uses as much as digits as its factorization.

20012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41194 (or 41182 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 20012022 is about 4473.4798535368. The cubic root of 20012022 is about 271.4961386466.

Adding to 20012022 its reverse (22021002), we get a palindrome (42033024).

The spelling of 20012022 in words is "twenty million, twelve thousand, twenty-two".

Divisors: 1 2 3 6 9 18 27 54 81 162 243 486 41177 82354 123531 247062 370593 741186 1111779 2223558 3335337 6670674 10006011 20012022