28242200 has 48 divisors (see below), whose sum is σ = 75047280. Its totient is φ = 9682560.

The previous prime is 28242199. The next prime is 28242223. The reversal of 28242200 is 224282.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 11 ways as a sum of consecutive naturals, for example, 8687 + ... + 11486.

It is an arithmetic number, because the mean of its divisors is an integer number (1563485).

Almost surely, 2^28242200 is an apocalyptic number.

28242200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28242200 is an abundant number, since it is smaller than the sum of its proper divisors (46805080).

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

28242200 is a wasteful number, since it uses less digits than its factorization.

28242200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20196 (or 20187 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 28242200 is about 5314.3390934339. The cubic root of 28242200 is about 304.5319345679.

Adding to 28242200 its reverse (224282), we get a palindrome (28466482).

The spelling of 28242200 in words is "twenty-eight million, two hundred forty-two thousand, two hundred".