28502200 has 96 divisors (see below), whose sum is σ = 71714160. Its totient is φ = 10496000.

The previous prime is 28502197. The next prime is 28502231. The reversal of 28502200 is 220582.

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 23 ways as a sum of consecutive naturals, for example, 282150 + ... + 282250.

Almost surely, 2^28502200 is an apocalyptic number.

28502200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28502200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35857080).

28502200 is an abundant number, since it is smaller than the sum of its proper divisors (43211960).

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

28502200 is a wasteful number, since it uses less digits than its factorization.

28502200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 28502200 is about 5338.7451709180. The cubic root of 28502200 is about 305.4635966920.

Adding to 28502200 its reverse (220582), we get a palindrome (28722782).

It can be divided in two parts, 2850 and 2200, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 28502200 in words is "twenty-eight million, five hundred two thousand, two hundred".