28066752 has 84 divisors (see below), whose sum is σ = 91954096. Its totient is φ = 8017920.

The previous prime is 28066747. The next prime is 28066793. The reversal of 28066752 is 25766082.

It is a tau number, because it is divible by the number of its divisors (84).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 552 + ... + 7512.

Almost surely, 2^28066752 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 28066752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45977048).

28066752 is an abundant number, since it is smaller than the sum of its proper divisors (63887344).

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

28066752 is a wasteful number, since it uses less digits than its factorization.

28066752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6986 (or 6973 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 28066752 is about 5297.8063384763. The cubic root of 28066752 is about 303.9000132857.

The spelling of 28066752 in words is "twenty-eight million, sixty-six thousand, seven hundred fifty-two".