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13230320 = 245165379
BaseRepresentation
bin110010011110…
…000011110000
3220220011120212
4302132003300
511341332240
61151323252
7220312235
oct62360360
926804525
1013230320
117517154
124520528
132982cbc
141a8578c
151265165
hexc9e0f0

13230320 has 20 divisors (see below), whose sum is σ = 30760680. Its totient is φ = 5292096.

The previous prime is 13230307. The next prime is 13230341. The reversal of 13230320 is 2303231.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 13230295 and 13230304.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82610 + ... + 82769.

It is an arithmetic number, because the mean of its divisors is an integer number (1538034).

Almost surely, 213230320 is an apocalyptic number.

13230320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13230320 is an abundant number, since it is smaller than the sum of its proper divisors (17530360).

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

13230320 is a wasteful number, since it uses less digits than its factorization.

13230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165392 (or 165386 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 13230320 is about 3637.3506842206. The cubic root of 13230320 is about 236.5139617525.

Adding to 13230320 its reverse (2303231), we get a palindrome (15533551).

The spelling of 13230320 in words is "thirteen million, two hundred thirty thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 40 80 165379 330758 661516 826895 1323032 1653790 2646064 3307580 6615160 13230320