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20807084187360 = 253454734159253
BaseRepresentation
bin1001011101100100001101…
…10111001001111011100000
32201200010201110202020210000
410232302012313021323200
510211400402022443420
6112130350441140000
74245155641306242
oct456620667117340
981603643666700
1020807084187360
1166a2264647629
12240067648a600
13b7c13ab31643
1451d0d53b6092
15261390071690
hex12ec86dc9ee0

20807084187360 has 240 divisors, whose sum is σ = 74994046053696. Its totient is φ = 5430501245952.

The previous prime is 20807084187347. The next prime is 20807084187371. The reversal of 20807084187360 is 6378148070802.

It is a happy number.

20807084187360 is a `hidden beast` number, since 20 + 8 + 0 + 7 + 0 + 84 + 187 + 360 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 20807084187297 and 20807084187306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16470507 + ... + 17688746.

Almost surely, 220807084187360 is an apocalyptic number.

20807084187360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20807084187360 is an abundant number, since it is smaller than the sum of its proper divisors (54186961866336).

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

20807084187360 is a wasteful number, since it uses less digits than its factorization.

20807084187360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34159327 (or 34159310 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 54.

The spelling of 20807084187360 in words is "twenty trillion, eight hundred seven billion, eighty-four million, one hundred eighty-seven thousand, three hundred sixty".