28216935 has 24 divisors (see below), whose sum is σ = 49836384. Its totient is φ = 14763840.

The previous prime is 28216933. The next prime is 28216963. The reversal of 28216935 is 53961282.

It is not a de Polignac number, because 28216935 - 2¹ = 28216933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28216935.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28216933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3531 + ... + 8300.

It is an arithmetic number, because the mean of its divisors is an integer number (2076516).

Almost surely, 2^28216935 is an apocalyptic number.

28216935 is a deficient number, since it is larger than the sum of its proper divisors (21619449).

28216935 is a wasteful number, since it uses less digits than its factorization.

28216935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11895 (or 11892 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28216935 is about 5311.9615021195. The cubic root of 28216935 is about 304.4410977496.

The spelling of 28216935 in words is "twenty-eight million, two hundred sixteen thousand, nine hundred thirty-five".