12255240 has 64 divisors (see below), whose sum is σ = 37296000. Its totient is φ = 3220992.

The previous prime is 12255227. The next prime is 12255259. The reversal of 12255240 is 4255221.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8061 + ... + 9459.

It is an arithmetic number, because the mean of its divisors is an integer number (582750).

Almost surely, 2^12255240 is an apocalyptic number.

12255240 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 12255240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18648000).

12255240 is an abundant number, since it is smaller than the sum of its proper divisors (25040760).

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

12255240 is a wasteful number, since it uses less digits than its factorization.

12255240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1482 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 12255240 is about 3500.7484913944. The cubic root of 12255240 is about 230.5546788782.

The spelling of 12255240 in words is "twelve million, two hundred fifty-five thousand, two hundred forty".