28027804 has 36 divisors (see below), whose sum is σ = 59036040. Its totient is φ = 11595360.

The previous prime is 28027801. The next prime is 28027807. The reversal of 28027804 is 40872082.

It is an interprime number because it is at equal distance from previous prime (28027801) and next prime (28027807).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28027801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3219 + ... + 8149.

It is an arithmetic number, because the mean of its divisors is an integer number (1639890).

Almost surely, 2^28027804 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28027804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29518020).

28027804 is an abundant number, since it is smaller than the sum of its proper divisors (31008236).

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

28027804 is a wasteful number, since it uses less digits than its factorization.

28027804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4978 (or 4969 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 28027804 is about 5294.1292012946. The cubic root of 28027804 is about 303.7593750317.

Adding to 28027804 its reverse (40872082), we get a palindrome (68899886).

The spelling of 28027804 in words is "twenty-eight million, twenty-seven thousand, eight hundred four".