28965838 has 32 divisors (see below), whose sum is σ = 49714560. Its totient is φ = 12536160.

The previous prime is 28965829. The next prime is 28965887. The reversal of 28965838 is 83856982.

It is a junction number, because it is equal to n+sod(n) for n = 28965791 and 28965800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52681 + ... + 53227.

It is an arithmetic number, because the mean of its divisors is an integer number (1553580).

Almost surely, 2^28965838 is an apocalyptic number.

28965838 is a deficient number, since it is larger than the sum of its proper divisors (20748722).

28965838 is a wasteful number, since it uses less digits than its factorization.

28965838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 829440, while the sum is 49.

The square root of 28965838 is about 5381.9920103991. The cubic root of 28965838 is about 307.1109955257.

The spelling of 28965838 in words is "twenty-eight million, nine hundred sixty-five thousand, eight hundred thirty-eight".