28827844 has 6 divisors (see below), whose sum is σ = 50448734. Its totient is φ = 14413920.

The previous prime is 28827839. The next prime is 28827853. The reversal of 28827844 is 44872882.

It can be written as a sum of positive squares in only one way, i.e., 27962944 + 864900 = 5288^2 + 930^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28827844.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3603477 + ... + 3603484.

Almost surely, 2^28827844 is an apocalyptic number.

It is an amenable number.

28827844 is a deficient number, since it is larger than the sum of its proper divisors (21620890).

28827844 is a wasteful number, since it uses less digits than its factorization.

28827844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206965 (or 7206963 counting only the distinct ones).

The product of its digits is 229376, while the sum is 43.

The square root of 28827844 is about 5369.1567308098. The cubic root of 28827844 is about 306.6225241021.

The spelling of 28827844 in words is "twenty-eight million, eight hundred twenty-seven thousand, eight hundred forty-four".