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1022130205 = 5414986001
BaseRepresentation
bin111100111011000…
…111100000011101
32122020022121001021
4330323013200131
54043131131310
6245231444141
734220651305
oct7473074035
92566277037
101022130205
11484a69608
12246386651
131339b8095
1499a6c605
155eb035da
hex3cec781d

1022130205 has 8 divisors (see below), whose sum is σ = 1256472504. Its totient is φ = 797760000.

The previous prime is 1022130199. The next prime is 1022130223. The reversal of 1022130205 is 5020312201.

It can be written as a sum of positive squares in 4 ways, for example, as 40373316 + 981756889 = 6354^2 + 31333^2 .

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

It is not a de Polignac number, because 1022130205 - 27 = 1022130077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492796 + ... + 2493205.

It is an arithmetic number, because the mean of its divisors is an integer number (157059063).

Almost surely, 21022130205 is an apocalyptic number.

It is an amenable number.

1022130205 is a deficient number, since it is larger than the sum of its proper divisors (234342299).

1022130205 is an equidigital number, since it uses as much as digits as its factorization.

1022130205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986047.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1022130205 is about 31970.7711042446. The cubic root of 1022130205 is about 1007.3229780912.

Adding to 1022130205 its reverse (5020312201), we get a palindrome (6042442406).

The spelling of 1022130205 in words is "one billion, twenty-two million, one hundred thirty thousand, two hundred five".

Divisors: 1 5 41 205 4986001 24930005 204426041 1022130205