28726448 has 40 divisors (see below), whose sum is σ = 58496256. Its totient is φ = 13640000.

The previous prime is 28726421. The next prime is 28726459. The reversal of 28726448 is 84462782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92213 + ... + 92523.

Almost surely, 2^28726448 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 28726448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29248128).

28726448 is an abundant number, since it is smaller than the sum of its proper divisors (29769808).

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

28726448 is a wasteful number, since it uses less digits than its factorization.

28726448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593 (or 587 counting only the distinct ones).

The product of its digits is 172032, while the sum is 41.

The square root of 28726448 is about 5359.7059620841. The cubic root of 28726448 is about 306.2626079496.

The spelling of 28726448 in words is "twenty-eight million, seven hundred twenty-six thousand, four hundred forty-eight".