12282240 has 64 divisors (see below), whose sum is σ = 39155760. Its totient is φ = 3274752.

The previous prime is 12282233. The next prime is 12282241. The reversal of 12282240 is 4228221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12282241) 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 7 ways as a sum of consecutive naturals, for example, 1279 + ... + 5118.

Almost surely, 2^12282240 is an apocalyptic number.

12282240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12282240 is an abundant number, since it is smaller than the sum of its proper divisors (26873520).

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

12282240 is an equidigital number, since it uses as much as digits as its factorization.

12282240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6419 (or 6407 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 12282240 is about 3504.6026878949. The cubic root of 12282240 is about 230.7238693747.

The spelling of 12282240 in words is "twelve million, two hundred eighty-two thousand, two hundred forty".