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13201801920 = 2632519241261
BaseRepresentation
bin11000100101110001…
…11000001011000000
31021002001112000122200
430102320320023000
5204014130130140
610022000233200
7645103315266
oct142270701300
937061460580
1013201801920
1156650891aa
12268530b800
13132513a218
148d349a436
15524015030
hex312e382c0

13201801920 has 168 divisors, whose sum is σ = 47798827440. Its totient is φ = 3335178240.

The previous prime is 13201801891. The next prime is 13201801927. The reversal of 13201801920 is 2910810231.

It is not an unprimeable number, because it can be changed into a prime (13201801927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65911 + ... + 175350.

It is an arithmetic number, because the mean of its divisors is an integer number (284516830).

Almost surely, 213201801920 is an apocalyptic number.

13201801920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13201801920 is an abundant number, since it is smaller than the sum of its proper divisors (34597025520).

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

13201801920 is a wasteful number, since it uses less digits than its factorization.

13201801920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241303 (or 241290 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The spelling of 13201801920 in words is "thirteen billion, two hundred one million, eight hundred one thousand, nine hundred twenty".