28383844 has 6 divisors (see below), whose sum is σ = 49671734. Its totient is φ = 14191920.

The previous prime is 28383811. The next prime is 28383857. The reversal of 28383844 is 44838382.

It can be written as a sum of positive squares in only one way, i.e., 24383844 + 4000000 = 4938^2 + 2000^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28383797 and 28383806.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3547977 + ... + 3547984.

Almost surely, 2^28383844 is an apocalyptic number.

It is an amenable number.

28383844 is a deficient number, since it is larger than the sum of its proper divisors (21287890).

28383844 is a wasteful number, since it uses less digits than its factorization.

28383844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095965 (or 7095963 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The square root of 28383844 is about 5327.6490124632. The cubic root of 28383844 is about 305.0401953654.

The spelling of 28383844 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred forty-four".