13238605 has 8 divisors (see below), whose sum is σ = 16186392. Its totient is φ = 10390848.

The previous prime is 13238579. The next prime is 13238627. The reversal of 13238605 is 50683231.

It can be written as a sum of positive squares in 4 ways, for example, as 1225449 + 12013156 = 1107^2 + 3466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13238605 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24714 + ... + 25243.

It is an arithmetic number, because the mean of its divisors is an integer number (2023299).

Almost surely, 2^13238605 is an apocalyptic number.

It is an amenable number.

13238605 is a deficient number, since it is larger than the sum of its proper divisors (2947787).

13238605 is an equidigital number, since it uses as much as digits as its factorization.

13238605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50015.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 13238605 is about 3638.4893843462. The cubic root of 13238605 is about 236.5633208330.

The spelling of 13238605 in words is "thirteen million, two hundred thirty-eight thousand, six hundred five".