12033440 has 24 divisors (see below), whose sum is σ = 28429380. Its totient is φ = 4813312.

The previous prime is 12033431. The next prime is 12033449. The reversal of 12033440 is 4433021.

It is an interprime number because it is at equal distance from previous prime (12033431) and next prime (12033449).

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 446224 = 3404^2 + 668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033449) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 37445 + ... + 37764.

Almost surely, 2^12033440 is an apocalyptic number.

12033440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12033440 is an abundant number, since it is smaller than the sum of its proper divisors (16395940).

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

12033440 is an equidigital number, since it uses as much as digits as its factorization.

12033440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75224 (or 75216 counting only the distinct ones).

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

The square root of 12033440 is about 3468.9249055003. The cubic root of 12033440 is about 229.1553137443.

Adding to 12033440 its reverse (4433021), we get a palindrome (16466461).

The spelling of 12033440 in words is "twelve million, thirty-three thousand, four hundred forty".