28166016 has 64 divisors (see below), whose sum is σ = 76683600. Its totient is φ = 9154560.

The previous prime is 28166003. The next prime is 28166023. The reversal of 28166016 is 61066182.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14850 + ... + 16638.

Almost surely, 2^28166016 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 28166016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38341800).

28166016 is an abundant number, since it is smaller than the sum of its proper divisors (48517584).

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

28166016 is a wasteful number, since it uses less digits than its factorization.

28166016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1835 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28166016 is about 5307.1664756252. The cubic root of 28166016 is about 304.2578606232.

The spelling of 28166016 in words is "twenty-eight million, one hundred sixty-six thousand, sixteen".