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13800844800 = 2937521729
BaseRepresentation
bin11001101101001100…
…00010111000000000
31022121210201120000000
430312212002320000
5211231004013200
610201240000000
7665666150061
oct146646027000
938553646000
1013800844800
115942242a66
122811a60000
1313bc28c272
1494cc74568
1555b8e4300
hex336982e00

13800844800 has 960 divisors, whose sum is σ = 56170065600. Its totient is φ = 3344302080.

The previous prime is 13800844787. The next prime is 13800844801. The reversal of 13800844800 is 844800831.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13800844801) 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 95 ways as a sum of consecutive naturals, for example, 475891186 + ... + 475891214.

It is an arithmetic number, because the mean of its divisors is an integer number (58510485).

Almost surely, 213800844800 is an apocalyptic number.

13800844800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13800844800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28085032800).

13800844800 is an abundant number, since it is smaller than the sum of its proper divisors (42369220800).

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

13800844800 is an frugal number, since it uses more digits than its factorization.

13800844800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 56 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The spelling of 13800844800 in words is "thirteen billion, eight hundred million, eight hundred forty-four thousand, eight hundred".