28045200 has 60 divisors (see below), whose sum is σ = 89841968. Its totient is φ = 7478400.

The previous prime is 28045187. The next prime is 28045201. The reversal of 28045200 is 254082.

It is a tau number, because it is divible by the number of its divisors (60).

It is not an unprimeable number, because it can be changed into a prime (28045201) 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, 10486 + ... + 12885.

Almost surely, 2^28045200 is an apocalyptic number.

28045200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28045200 is an abundant number, since it is smaller than the sum of its proper divisors (61796768).

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

28045200 is a wasteful number, since it uses less digits than its factorization.

28045200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23392 (or 23381 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 28045200 is about 5295.7718984110. The cubic root of 28045200 is about 303.8222067495.

Adding to 28045200 its reverse (254082), we get a palindrome (28299282).

The spelling of 28045200 in words is "twenty-eight million, forty-five thousand, two hundred".