12234640 has 40 divisors (see below), whose sum is σ = 31033728. Its totient is φ = 4448640.

The previous prime is 12234637. The next prime is 12234659. The reversal of 12234640 is 4643221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6072 + ... + 7831.

Almost surely, 2^12234640 is an apocalyptic number.

12234640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12234640 is an abundant number, since it is smaller than the sum of its proper divisors (18799088).

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

12234640 is a wasteful number, since it uses less digits than its factorization.

12234640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13927 (or 13921 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 12234640 is about 3497.8050260127. The cubic root of 12234640 is about 230.4254255956.

Adding to 12234640 its reverse (4643221), we get a palindrome (16877861).

The spelling of 12234640 in words is "twelve million, two hundred thirty-four thousand, six hundred forty".