12428273 has 12 divisors (see below), whose sum is σ = 14713524. Its totient is φ = 10428000.

The previous prime is 12428243. The next prime is 12428279. The reversal of 12428273 is 37282421.

It can be written as a sum of positive squares in 2 ways, for example, as 4986289 + 7441984 = 2233^2 + 2728^2 .

It is not a de Polignac number, because 12428273 - 2¹² = 12424177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12428279) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2378 + ... + 5523.

It is an arithmetic number, because the mean of its divisors is an integer number (1226127).

Almost surely, 2^12428273 is an apocalyptic number.

12428273 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12428273 is a deficient number, since it is larger than the sum of its proper divisors (2285251).

12428273 is a wasteful number, since it uses less digits than its factorization.

12428273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7936 (or 7925 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 12428273 is about 3525.3755828280. The cubic root of 12428273 is about 231.6346869117.

The spelling of 12428273 in words is "twelve million, four hundred twenty-eight thousand, two hundred seventy-three".