28030300 has 18 divisors (see below), whose sum is σ = 60825968. Its totient is φ = 11212080.

The previous prime is 28030279. The next prime is 28030319. The reversal of 28030300 is 303082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 140052 + ... + 140251.

Almost surely, 2^28030300 is an apocalyptic number.

28030300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28030300 is an abundant number, since it is smaller than the sum of its proper divisors (32795668).

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

28030300 is a wasteful number, since it uses less digits than its factorization.

28030300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280317 (or 280310 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 28030300 is about 5294.3649288654. The cubic root of 28030300 is about 303.7683918030.

Adding to 28030300 its reverse (303082), we get a palindrome (28333382).

The spelling of 28030300 in words is "twenty-eight million, thirty thousand, three hundred".