28016235 has 48 divisors (see below), whose sum is σ = 53018784. Its totient is φ = 13602816.

The previous prime is 28016207. The next prime is 28016239. The reversal of 28016235 is 53261082.

It is not a de Polignac number, because 28016235 - 2⁸ = 28015979 is a prime.

It is a super-3 number, since 3×28016235³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28016199 and 28016208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28016239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48267 + ... + 48843.

It is an arithmetic number, because the mean of its divisors is an integer number (1104558).

Almost surely, 2^28016235 is an apocalyptic number.

28016235 is a deficient number, since it is larger than the sum of its proper divisors (25002549).

28016235 is a wasteful number, since it uses less digits than its factorization.

28016235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 28016235 is about 5293.0364631278. The cubic root of 28016235 is about 303.7175751600.

The spelling of 28016235 in words is "twenty-eight million, sixteen thousand, two hundred thirty-five".