28385088 has 112 divisors (see below), whose sum is σ = 81930240. Its totient is φ = 8640000.

The previous prime is 28385081. The next prime is 28385111. The reversal of 28385088 is 88058382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112963 + ... + 113213.

It is an arithmetic number, because the mean of its divisors is an integer number (731520).

Almost surely, 2^28385088 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 28385088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40965120).

28385088 is an abundant number, since it is smaller than the sum of its proper divisors (53545152).

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

28385088 is a wasteful number, since it uses less digits than its factorization.

28385088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 28385088 is about 5327.7657606167. The cubic root of 28385088 is about 305.0446517087.

The spelling of 28385088 in words is "twenty-eight million, three hundred eighty-five thousand, eighty-eight".