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20020132244 = 227715004723
BaseRepresentation
bin10010101001010010…
…101111100110010100
31220200020102002111102
4102221102233212110
5312000123212434
613110324525232
71306055213330
oct225122574624
956606362442
1020020132244
11854392a742
123a68850818
131b709062c8
14d7cc467c0
157c28e607e
hex4a94af994

20020132244 has 12 divisors (see below), whose sum is σ = 40040264544. Its totient is φ = 8580056664.

The previous prime is 20020132241. The next prime is 20020132273. The reversal of 20020132244 is 44223102002.

20020132244 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020132241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 357502334 + ... + 357502389.

It is an arithmetic number, because the mean of its divisors is an integer number (3336688712).

Almost surely, 220020132244 is an apocalyptic number.

It is an amenable number.

20020132244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20020132244 is a wasteful number, since it uses less digits than its factorization.

20020132244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 715004734 (or 715004732 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20020132244 its reverse (44223102002), we get a palindrome (64243234246).

The spelling of 20020132244 in words is "twenty billion, twenty million, one hundred thirty-two thousand, two hundred forty-four".

Divisors: 1 2 4 7 14 28 715004723 1430009446 2860018892 5005033061 10010066122 20020132244