28730200 has 24 divisors (see below), whose sum is σ = 66798180. Its totient is φ = 11492000.

The previous prime is 28730183. The next prime is 28730231. The reversal of 28730200 is 203782.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 71626 + ... + 72025.

Almost surely, 2^28730200 is an apocalyptic number.

28730200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28730200 is an abundant number, since it is smaller than the sum of its proper divisors (38067980).

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

28730200 is a wasteful number, since it uses less digits than its factorization.

28730200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143667 (or 143658 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 28730200 is about 5360.0559698570. The cubic root of 28730200 is about 306.2759411595.

Adding to 28730200 its reverse (203782), we get a palindrome (28933982).

The spelling of 28730200 in words is "twenty-eight million, seven hundred thirty thousand, two hundred".