28025800 has 48 divisors (see below), whose sum is σ = 71089200. Its totient is φ = 10190400.

The previous prime is 28025791. The next prime is 28025801. The reversal of 28025800 is 852082.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (28025801) by changing a digit.

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, 4170 + ... + 8569.

It is an arithmetic number, because the mean of its divisors is an integer number (1481025).

Almost surely, 2^28025800 is an apocalyptic number.

28025800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28025800 is an abundant number, since it is smaller than the sum of its proper divisors (43063400).

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

28025800 is a wasteful number, since it uses less digits than its factorization.

28025800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12766 (or 12757 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 28025800 is about 5293.9399316577. The cubic root of 28025800 is about 303.7521352173.

Adding to 28025800 its reverse (852082), we get a palindrome (28877882).

The spelling of 28025800 in words is "twenty-eight million, twenty-five thousand, eight hundred".