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23312033020 = 22517128353441
BaseRepresentation
bin10101101101100000…
…010110010011111100
32020011122200222102101
4111231200112103330
5340220340024040
614413121434444
71453460003563
oct255540262374
966148628371
1023312033020
1199830424a1
12462719ba24
132276910ca3
1411b2114bda
159168e909a
hex56d8164fc

23312033020 has 48 divisors (see below), whose sum is σ = 51876363168. Its totient is φ = 8769290240.

The previous prime is 23312033009. The next prime is 23312033023. The reversal of 23312033020 is 2033021332.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23312033023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409500 + ... + 462940.

It is an arithmetic number, because the mean of its divisors is an integer number (1080757566).

Almost surely, 223312033020 is an apocalyptic number.

23312033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23312033020 is an abundant number, since it is smaller than the sum of its proper divisors (28564330148).

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

23312033020 is a wasteful number, since it uses less digits than its factorization.

23312033020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54750 (or 54748 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 23312033020 its reverse (2033021332), we get a palindrome (25345054352).

The spelling of 23312033020 in words is "twenty-three billion, three hundred twelve million, thirty-three thousand, twenty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 1283 2566 5132 6415 12830 21811 25660 43622 53441 87244 106882 109055 213764 218110 267205 436220 534410 908497 1068820 1816994 3633988 4542485 9084970 18169940 68564803 137129606 274259212 342824015 685648030 1165601651 1371296060 2331203302 4662406604 5828008255 11656016510 23312033020