28268448 has 48 divisors (see below), whose sum is σ = 79916256. Its totient is φ = 8697600.

The previous prime is 28268441. The next prime is 28268477. The reversal of 28268448 is 84486282.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10078 + ... + 12573.

It is an arithmetic number, because the mean of its divisors is an integer number (1664922).

Almost surely, 2^28268448 is an apocalyptic number.

It is an amenable number.

28268448 is an abundant number, since it is smaller than the sum of its proper divisors (51647808).

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

28268448 is a wasteful number, since it uses less digits than its factorization.

28268448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22677 (or 22669 counting only the distinct ones).

The product of its digits is 196608, while the sum is 42.

The square root of 28268448 is about 5316.8080649954. The cubic root of 28268448 is about 304.6262482685.

The spelling of 28268448 in words is "twenty-eight million, two hundred sixty-eight thousand, four hundred forty-eight".