28443300 has 36 divisors (see below), whose sum is σ = 82296816. Its totient is φ = 7584800.

The previous prime is 28443281. The next prime is 28443307. The reversal of 28443300 is 334482.

It is not an unprimeable number, because it can be changed into a prime (28443307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47106 + ... + 47705.

Almost surely, 2^28443300 is an apocalyptic number.

28443300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28443300 is an abundant number, since it is smaller than the sum of its proper divisors (53853516).

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

28443300 is a wasteful number, since it uses less digits than its factorization.

28443300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94828 (or 94821 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 28443300 is about 5333.2260405874. The cubic root of 28443300 is about 305.2530373494.

Adding to 28443300 its reverse (334482), we get a palindrome (28777782).

The spelling of 28443300 in words is "twenty-eight million, four hundred forty-three thousand, three hundred".