28084216 has 16 divisors (see below), whose sum is σ = 53202240. Its totient is φ = 13896960.

The previous prime is 28084207. The next prime is 28084237. The reversal of 28084216 is 61248082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17320 + ... + 18871.

It is an arithmetic number, because the mean of its divisors is an integer number (3325140).

Almost surely, 2^28084216 is an apocalyptic number.

It is an amenable number.

28084216 is a deficient number, since it is larger than the sum of its proper divisors (25118024).

28084216 is a wasteful number, since it uses less digits than its factorization.

28084216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36294 (or 36290 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 28084216 is about 5299.4543115306. The cubic root of 28084216 is about 303.9630322083.

The spelling of 28084216 in words is "twenty-eight million, eighty-four thousand, two hundred sixteen".