28558200 has 96 divisors (see below), whose sum is σ = 96600960. Its totient is φ = 6921600.

The previous prime is 28558199. The next prime is 28558219. The reversal of 28558200 is 285582.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4437 + ... + 8763.

It is an arithmetic number, because the mean of its divisors is an integer number (1006260).

Almost surely, 2^28558200 is an apocalyptic number.

28558200 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 28558200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48300480).

28558200 is an abundant number, since it is smaller than the sum of its proper divisors (68042760).

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

28558200 is a wasteful number, since it uses less digits than its factorization.

28558200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4357 (or 4348 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The square root of 28558200 is about 5343.9872754340. The cubic root of 28558200 is about 305.6635200966.

Multiplying 28558200 by its reverse (285582), we get a square (8155707872400 = 2855820²).

28558200 divided by its reverse (285582) gives a square (100 = 10²).

It can be divided in two parts, 285 and 58200, that added together give a palindrome (58485).

The spelling of 28558200 in words is "twenty-eight million, five hundred fifty-eight thousand, two hundred".