13563430 has 16 divisors (see below), whose sum is σ = 25202304. Its totient is φ = 5250240.

The previous prime is 13563419. The next prime is 13563439. The reversal of 13563430 is 3436531.

It is a junction number, because it is equal to n+sod(n) for n = 13563395 and 13563404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13563439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21567 + ... + 22186.

It is an arithmetic number, because the mean of its divisors is an integer number (1575144).

Almost surely, 2^13563430 is an apocalyptic number.

13563430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13563430 is a deficient number, since it is larger than the sum of its proper divisors (11638874).

13563430 is a wasteful number, since it uses less digits than its factorization.

13563430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43791.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 13563430 is about 3682.8562285270. The cubic root of 13563430 is about 238.4824969172.

Adding to 13563430 its reverse (3436531), we get a palindrome (16999961).

The spelling of 13563430 in words is "thirteen million, five hundred sixty-three thousand, four hundred thirty".