12243655 has 16 divisors (see below), whose sum is σ = 16096320. Its totient is φ = 8899072.

The previous prime is 12243611. The next prime is 12243661. The reversal of 12243655 is 55634221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12243655 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (1006020).

Almost surely, 2^12243655 is an apocalyptic number.

12243655 is a deficient number, since it is larger than the sum of its proper divisors (3852665).

12243655 is a wasteful number, since it uses less digits than its factorization.

12243655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018.

The product of its digits is 7200, while the sum is 28.

The square root of 12243655 is about 3499.0934540249. The cubic root of 12243655 is about 230.4820074323.

Adding to 12243655 its reverse (55634221), we get a palindrome (67877876).

The spelling of 12243655 in words is "twelve million, two hundred forty-three thousand, six hundred fifty-five".