12207438 has 12 divisors (see below), whose sum is σ = 26449488. Its totient is φ = 4069140.

The previous prime is 12207431. The next prime is 12207439. The reversal of 12207438 is 83470221.

12207438 is a `hidden beast` number, since 1 + 220 + 7 + 438 = 666.

12207438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12207431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 339078 + ... + 339113.

It is an arithmetic number, because the mean of its divisors is an integer number (2204124).

Almost surely, 2^12207438 is an apocalyptic number.

12207438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12207438 is an abundant number, since it is smaller than the sum of its proper divisors (14242050).

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

12207438 is a wasteful number, since it uses less digits than its factorization.

12207438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678199 (or 678196 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12207438 is about 3493.9144236801. The cubic root of 12207438 is about 230.2545260422.

Adding to 12207438 its reverse (83470221), we get a palindrome (95677659).

The spelling of 12207438 in words is "twelve million, two hundred seven thousand, four hundred thirty-eight".