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20323060256020 = 22515117338898787
BaseRepresentation
bin1001001111011110101001…
…10010011000110100010100
32122221212101000022220201011
410213233110302120310110
510130433111411143040
6111120141320342004
74165202243625334
oct447572462306424
978855330286634
1020323060256020
116525a63769a65
1223428b3914904
13b455c180b142
145038d9c950c4
152539b1ca83ea
hex127bd4c98d14

20323060256020 has 48 divisors (see below), whose sum is σ = 43209396091008. Its totient is φ = 8028709430400.

The previous prime is 20323060255957. The next prime is 20323060256021. The reversal of 20323060256020 is 2065206032302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323060256021) 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, 18926934 + ... + 19971853.

It is an arithmetic number, because the mean of its divisors is an integer number (900195751896).

Almost surely, 220323060256020 is an apocalyptic number.

20323060256020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20323060256020 is an abundant number, since it is smaller than the sum of its proper divisors (22886335834988).

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

20323060256020 is a wasteful number, since it uses less digits than its factorization.

20323060256020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38899120 (or 38899118 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

Adding to 20323060256020 its reverse (2065206032302), we get a palindrome (22388266288322).

The spelling of 20323060256020 in words is "twenty trillion, three hundred twenty-three billion, sixty million, two hundred fifty-six thousand, twenty".

Divisors: 1 2 4 5 10 20 151 173 302 346 604 692 755 865 1510 1730 3020 3460 26123 52246 104492 130615 261230 522460 38898787 77797574 155595148 194493935 388987870 777975740 5873716837 6729490151 11747433674 13458980302 23494867348 26917960604 29368584185 33647450755 58737168370 67294901510 117474336740 134589803020 1016153012801 2032306025602 4064612051204 5080765064005 10161530128010 20323060256020