28353304 has 64 divisors (see below), whose sum is σ = 63685440. Its totient is φ = 11581440.

The previous prime is 28353293. The next prime is 28353323. The reversal of 28353304 is 40335382.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121572 + ... + 121804.

It is an arithmetic number, because the mean of its divisors is an integer number (995085).

Almost surely, 2^28353304 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 28353304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31842720).

28353304 is an abundant number, since it is smaller than the sum of its proper divisors (35332136).

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

28353304 is a wasteful number, since it uses less digits than its factorization.

28353304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 28353304 is about 5324.7820612679. The cubic root of 28353304 is about 304.9307519937.

Adding to 28353304 its reverse (40335382), we get a palindrome (68688686).

The spelling of 28353304 in words is "twenty-eight million, three hundred fifty-three thousand, three hundred four".