28918448 has 40 divisors (see below), whose sum is σ = 61829376. Its totient is φ = 13017600.

The previous prime is 28918441. The next prime is 28918451. The reversal of 28918448 is 84481982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28918399 and 28918408.

It is not an unprimeable number, because it can be changed into a prime (28918441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6833 + ... + 10223.

Almost surely, 2^28918448 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 28918448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30914688).

28918448 is an abundant number, since it is smaller than the sum of its proper divisors (32910928).

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

28918448 is a wasteful number, since it uses less digits than its factorization.

28918448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3453 (or 3447 counting only the distinct ones).

The product of its digits is 147456, while the sum is 44.

The square root of 28918448 is about 5377.5875632108. The cubic root of 28918448 is about 306.9434195650.

The spelling of 28918448 in words is "twenty-eight million, nine hundred eighteen thousand, four hundred forty-eight".