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13206400 = 27524127
BaseRepresentation
bin110010011000…
…001110000000
3220211221202221
4302120032000
511340101100
61151020424
7220152424
oct62301600
926757687
1013206400
117500189
12450a714
13297514c
141a7ab84
15125d01a
hexc98380

13206400 has 48 divisors (see below), whose sum is σ = 32631840. Its totient is φ = 5281280.

The previous prime is 13206377. The next prime is 13206407. The reversal of 13206400 is 460231.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1137 + ... + 5263.

It is an arithmetic number, because the mean of its divisors is an integer number (679830).

Almost surely, 213206400 is an apocalyptic number.

13206400 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 13206400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16315920).

13206400 is an abundant number, since it is smaller than the sum of its proper divisors (19425440).

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

13206400 is an equidigital number, since it uses as much as digits as its factorization.

13206400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4151 (or 4134 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13206400 is about 3634.0610891948. The cubic root of 13206400 is about 236.3713391788.

Adding to 13206400 its reverse (460231), we get a palindrome (13666631).

The spelling of 13206400 in words is "thirteen million, two hundred six thousand, four hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 128 160 200 320 400 640 800 1600 3200 4127 8254 16508 20635 33016 41270 66032 82540 103175 132064 165080 206350 264128 330160 412700 528256 660320 825400 1320640 1650800 2641280 3301600 6603200 13206400