28819296 has 108 divisors (see below), whose sum is σ = 90191556. Its totient is φ = 8722560.

The previous prime is 28819291. The next prime is 28819381. The reversal of 28819296 is 69291882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28819291) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 34435 + ... + 35261.

It is an arithmetic number, because the mean of its divisors is an integer number (835107).

Almost surely, 2^28819296 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 28819296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45095778).

28819296 is an abundant number, since it is smaller than the sum of its proper divisors (61372260).

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

28819296 is a wasteful number, since it uses less digits than its factorization.

28819296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 843 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 28819296 is about 5368.3606436230. The cubic root of 28819296 is about 306.5922146503.

The spelling of 28819296 in words is "twenty-eight million, eight hundred nineteen thousand, two hundred ninety-six".