12026240 has 128 divisors (see below), whose sum is σ = 32313600. Its totient is φ = 4257792.

The previous prime is 12026173. The next prime is 12026257. The reversal of 12026240 is 4262021.

It is a tau number, because it is divible by the number of its divisors (128).

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, 279659 + ... + 279701.

It is an arithmetic number, because the mean of its divisors is an integer number (252450).

Almost surely, 2^12026240 is an apocalyptic number.

12026240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12026240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16156800).

12026240 is an abundant number, since it is smaller than the sum of its proper divisors (20287360).

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

12026240 is a wasteful number, since it uses less digits than its factorization.

12026240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 12026240 is about 3467.8869647092. The cubic root of 12026240 is about 229.1096009242.

Adding to 12026240 its reverse (4262021), we get a palindrome (16288261).

The spelling of 12026240 in words is "twelve million, twenty-six thousand, two hundred forty".