28327828 has 12 divisors (see below), whose sum is σ = 49611520. Its totient is φ = 14153112.

The previous prime is 28327823. The next prime is 28327837. The reversal of 28327828 is 82872382.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28327823) 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 3 ways as a sum of consecutive naturals, for example, 7375 + ... + 10537.

Almost surely, 2^28327828 is an apocalyptic number.

It is an amenable number.

28327828 is a deficient number, since it is larger than the sum of its proper divisors (21283692).

28327828 is a wasteful number, since it uses less digits than its factorization.

28327828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5406 (or 5404 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 28327828 is about 5322.3893130811. The cubic root of 28327828 is about 304.8393958718.

The spelling of 28327828 in words is "twenty-eight million, three hundred twenty-seven thousand, eight hundred twenty-eight".