28905852 has 24 divisors (see below), whose sum is σ = 68047056. Its totient is φ = 9549568.

The previous prime is 28905841. The next prime is 28905853. The reversal of 28905852 is 25850982.

It is a self number, because there is not a number n which added to its sum of digits gives 28905852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28905853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9303 + ... + 12014.

It is an arithmetic number, because the mean of its divisors is an integer number (2835294).

Almost surely, 2^28905852 is an apocalyptic number.

It is an amenable number.

28905852 is an abundant number, since it is smaller than the sum of its proper divisors (39141204).

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

28905852 is a wasteful number, since it uses less digits than its factorization.

28905852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21437 (or 21435 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 28905852 is about 5376.4162785261. The cubic root of 28905852 is about 306.8988480076.

The spelling of 28905852 in words is "twenty-eight million, nine hundred five thousand, eight hundred fifty-two".