28047296 has 28 divisors (see below), whose sum is σ = 56220360. Its totient is φ = 13881600.

The previous prime is 28047269. The next prime is 28047301. The reversal of 28047296 is 69274082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4295 + ... + 8633.

It is an arithmetic number, because the mean of its divisors is an integer number (2007870).

Almost surely, 2^28047296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28047296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28110180).

28047296 is an abundant number, since it is smaller than the sum of its proper divisors (28173064).

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

28047296 is a wasteful number, since it uses less digits than its factorization.

28047296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4452 (or 4442 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 28047296 is about 5295.9697884335. The cubic root of 28047296 is about 303.8297754301.

The spelling of 28047296 in words is "twenty-eight million, forty-seven thousand, two hundred ninety-six".