12284387 has 4 divisors (see below), whose sum is σ = 13007016. Its totient is φ = 11561760.

The previous prime is 12284381. The next prime is 12284411. The reversal of 12284387 is 78348221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78348221 = 7 ⋅11192603.

It is a cyclic number.

It is not a de Polignac number, because 12284387 - 2⁸ = 12284131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12284381) 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, 361289 + ... + 361322.

It is an arithmetic number, because the mean of its divisors is an integer number (3251754).

Almost surely, 2^12284387 is an apocalyptic number.

12284387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12284387 is a deficient number, since it is larger than the sum of its proper divisors (722629).

12284387 is an equidigital number, since it uses as much as digits as its factorization.

12284387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722628.

The product of its digits is 21504, while the sum is 35.

The square root of 12284387 is about 3504.9089859795. The cubic root of 12284387 is about 230.7373125057.

The spelling of 12284387 in words is "twelve million, two hundred eighty-four thousand, three hundred eighty-seven".