12238605 has 12 divisors (see below), whose sum is σ = 21213660. Its totient is φ = 6527232.

The previous prime is 12238591. The next prime is 12238607. The reversal of 12238605 is 50683221.

12238605 is a `hidden beast` number, since 1 + 22 + 38 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4235364 + 8003241 = 2058^2 + 2829^2 .

It is not a de Polignac number, because 12238605 - 2⁷ = 12238477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12238607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135940 + ... + 136029.

It is an arithmetic number, because the mean of its divisors is an integer number (1767805).

Almost surely, 2^12238605 is an apocalyptic number.

12238605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12238605 is a deficient number, since it is larger than the sum of its proper divisors (8975055).

12238605 is a wasteful number, since it uses less digits than its factorization.

12238605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271980 (or 271977 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 12238605 is about 3498.3717641211. The cubic root of 12238605 is about 230.4503149843.

The spelling of 12238605 in words is "twelve million, two hundred thirty-eight thousand, six hundred five".