28383867 has 6 divisors (see below), whose sum is σ = 40998932. Its totient is φ = 18922572.

The previous prime is 28383857. The next prime is 28383871. The reversal of 28383867 is 76838382.

It is not a de Polignac number, because 28383867 - 2¹¹ = 28381819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28383857) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1576873 + ... + 1576890.

Almost surely, 2^28383867 is an apocalyptic number.

28383867 is a deficient number, since it is larger than the sum of its proper divisors (12615065).

28383867 is a wasteful number, since it uses less digits than its factorization.

28383867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153769 (or 3153766 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 28383867 is about 5327.6511710134. The cubic root of 28383867 is about 305.0402777588.

The spelling of 28383867 in words is "twenty-eight million, three hundred eighty-three thousand, eight hundred sixty-seven".