12448281 has 4 divisors (see below), whose sum is σ = 16597712. Its totient is φ = 8298852.

The previous prime is 12448277. The next prime is 12448283. The reversal of 12448281 is 18284421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18284421 = 3 ⋅6094807.

It is not a de Polignac number, because 12448281 - 2² = 12448277 is a prime.

It is a super-2 number, since 2×12448281² = 309919399709922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12448283) 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, 2074711 + ... + 2074716.

It is an arithmetic number, because the mean of its divisors is an integer number (4149428).

Almost surely, 2^12448281 is an apocalyptic number.

It is an amenable number.

12448281 is a deficient number, since it is larger than the sum of its proper divisors (4149431).

12448281 is an equidigital number, since it uses as much as digits as its factorization.

12448281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4149430.

The product of its digits is 4096, while the sum is 30.

The square root of 12448281 is about 3528.2121534851. The cubic root of 12448281 is about 231.7589214432.

The spelling of 12448281 in words is "twelve million, four hundred forty-eight thousand, two hundred eighty-one".