12332240 has 20 divisors (see below), whose sum is σ = 28672644. Its totient is φ = 4932864.

The previous prime is 12332237. The next prime is 12332249. The reversal of 12332240 is 4223321.

12332240 = T₁₉₃ + T₁₉₄ + ... + T₄₃₂.

It can be written as a sum of positive squares in 2 ways, for example, as 3356224 + 8976016 = 1832^2 + 2996^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12332249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76997 + ... + 77156.

Almost surely, 2^12332240 is an apocalyptic number.

12332240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12332240 is an abundant number, since it is smaller than the sum of its proper divisors (16340404).

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

12332240 is a wasteful number, since it uses less digits than its factorization.

12332240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154166 (or 154160 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 12332240 is about 3511.7289189230. The cubic root of 12332240 is about 231.0365315187.

Adding to 12332240 its reverse (4223321), we get a palindrome (16555561).

The spelling of 12332240 in words is "twelve million, three hundred thirty-two thousand, two hundred forty".