28395584 has 56 divisors (see below), whose sum is σ = 64910208. Its totient is φ = 12072960.

The previous prime is 28395581. The next prime is 28395589. The reversal of 28395584 is 48559382.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (28395581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107837 + ... + 108099.

Almost surely, 2^28395584 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 28395584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32455104).

28395584 is an abundant number, since it is smaller than the sum of its proper divisors (36514624).

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

28395584 is a wasteful number, since it uses less digits than its factorization.

28395584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523 (or 513 counting only the distinct ones).

The product of its digits is 345600, while the sum is 44.

The square root of 28395584 is about 5328.7506978653. The cubic root of 28395584 is about 305.0822460271.

The spelling of 28395584 in words is "twenty-eight million, three hundred ninety-five thousand, five hundred eighty-four".