28044300 has 36 divisors (see below), whose sum is σ = 81142376. Its totient is φ = 7478400.

The previous prime is 28044277. The next prime is 28044301. The reversal of 28044300 is 344082.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28044301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46441 + ... + 47040.

Almost surely, 2^28044300 is an apocalyptic number.

28044300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28044300 is an abundant number, since it is smaller than the sum of its proper divisors (53098076).

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

28044300 is a wasteful number, since it uses less digits than its factorization.

28044300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93498 (or 93491 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 28044300 is about 5295.6869242809. The cubic root of 28044300 is about 303.8189567233.

Adding to 28044300 its reverse (344082), we get a palindrome (28388382).

The spelling of 28044300 in words is "twenty-eight million, forty-four thousand, three hundred".