28083216 has 160 divisors (see below), whose sum is σ = 89994240. Its totient is φ = 7368192.

The previous prime is 28083203. The next prime is 28083227. The reversal of 28083216 is 61238082.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 338311 + ... + 338393.

It is an arithmetic number, because the mean of its divisors is an integer number (562464).

Almost surely, 2^28083216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28083216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44997120).

28083216 is an abundant number, since it is smaller than the sum of its proper divisors (61911024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28083216 is a wasteful number, since it uses less digits than its factorization.

28083216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 167 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28083216 is about 5299.3599613538. The cubic root of 28083216 is about 303.9594244091.

The spelling of 28083216 in words is "twenty-eight million, eighty-three thousand, two hundred sixteen".