28827700 has 72 divisors (see below), whose sum is σ = 69370560. Its totient is φ = 10310400.

The previous prime is 28827683. The next prime is 28827703. The reversal of 28827700 is 772882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28827703) 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 23 ways as a sum of consecutive naturals, for example, 80121 + ... + 80479.

It is an arithmetic number, because the mean of its divisors is an integer number (963480).

Almost surely, 2^28827700 is an apocalyptic number.

28827700 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 28827700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34685280).

28827700 is an abundant number, since it is smaller than the sum of its proper divisors (40542860).

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

28827700 is a wasteful number, since it uses less digits than its factorization.

28827700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 28827700 is about 5369.1433208660. The cubic root of 28827700 is about 306.6220135573.

It can be divided in two parts, 28 and 827700, that added together give a palindrome (827728).

The spelling of 28827700 in words is "twenty-eight million, eight hundred twenty-seven thousand, seven hundred".