12023240 has 16 divisors (see below), whose sum is σ = 27052380. Its totient is φ = 4809280.

The previous prime is 12023239. The next prime is 12023243. The reversal of 12023240 is 4232021.

It can be written as a sum of positive squares in 2 ways, for example, as 10719076 + 1304164 = 3274^2 + 1142^2 .

It is not an unprimeable number, because it can be changed into a prime (12023243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150251 + ... + 150330.

Almost surely, 2^12023240 is an apocalyptic number.

12023240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12023240 is an abundant number, since it is smaller than the sum of its proper divisors (15029140).

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

12023240 is a wasteful number, since it uses less digits than its factorization.

12023240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300592 (or 300588 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12023240 is about 3467.4543976814. The cubic root of 12023240 is about 229.0905485309.

Adding to 12023240 its reverse (4232021), we get a palindrome (16255261).

The spelling of 12023240 in words is "twelve million, twenty-three thousand, two hundred forty".