13288605 has 16 divisors (see below), whose sum is σ = 23194944. Its totient is φ = 6442880.

The previous prime is 13288603. The next prime is 13288609. The reversal of 13288605 is 50688231.

It is a happy number.

13288605 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13288605 - 2¹ = 13288603 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13288603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40104 + ... + 40433.

It is an arithmetic number, because the mean of its divisors is an integer number (1449684).

Almost surely, 2^13288605 is an apocalyptic number.

13288605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13288605 is a deficient number, since it is larger than the sum of its proper divisors (9906339).

13288605 is a wasteful number, since it uses less digits than its factorization.

13288605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80556.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 13288605 is about 3645.3538922854. The cubic root of 13288605 is about 236.8607667297.

The spelling of 13288605 in words is "thirteen million, two hundred eighty-eight thousand, six hundred five".