28268446 has 8 divisors (see below), whose sum is σ = 43864920. Its totient is φ = 13646808.

The previous prime is 28268441. The next prime is 28268477. The reversal of 28268446 is 64486282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 28268399 and 28268408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28268441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243636 + ... + 243751.

It is an arithmetic number, because the mean of its divisors is an integer number (5483115).

Almost surely, 2^28268446 is an apocalyptic number.

28268446 is a deficient number, since it is larger than the sum of its proper divisors (15596474).

28268446 is a wasteful number, since it uses less digits than its factorization.

28268446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487418.

The product of its digits is 147456, while the sum is 40.

The square root of 28268446 is about 5316.8078769126. The cubic root of 28268446 is about 304.6262410844.

The spelling of 28268446 in words is "twenty-eight million, two hundred sixty-eight thousand, four hundred forty-six".