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23201132020 = 22511105459691
BaseRepresentation
bin10101100110111001…
…010010110111110100
32012212221000121211221
4111212321102313310
5340003442211040
614354120440124
71450642240213
oct254671226764
965787017757
1023201132020
119926485980
1245b6019044
1322599517b1
1411a14c707a
1590bcde74a
hex566e52df4

23201132020 has 24 divisors (see below), whose sum is σ = 53151684768. Its totient is φ = 8436775200.

The previous prime is 23201132011. The next prime is 23201132063. The reversal of 23201132020 is 2023110232.

It is a junction number, because it is equal to n+sod(n) for n = 23201131985 and 23201132003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52729626 + ... + 52730065.

It is an arithmetic number, because the mean of its divisors is an integer number (2214653532).

Almost surely, 223201132020 is an apocalyptic number.

23201132020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23201132020 is an abundant number, since it is smaller than the sum of its proper divisors (29950552748).

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

23201132020 is a wasteful number, since it uses less digits than its factorization.

23201132020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105459711 (or 105459709 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 23201132020 its reverse (2023110232), we get a palindrome (25224242252).

The spelling of 23201132020 in words is "twenty-three billion, two hundred one million, one hundred thirty-two thousand, twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 105459691 210919382 421838764 527298455 1054596910 1160056601 2109193820 2320113202 4640226404 5800283005 11600566010 23201132020