28027584 has 168 divisors, whose sum is σ = 91531440. Its totient is φ = 8128512.

The previous prime is 28027583. The next prime is 28027589. The reversal of 28027584 is 48572082.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (28027583) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142174 + ... + 142370.

It is an arithmetic number, because the mean of its divisors is an integer number (544830).

Almost surely, 2^28027584 is an apocalyptic number.

28027584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28027584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45765720).

28027584 is an abundant number, since it is smaller than the sum of its proper divisors (63503856).

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

28027584 is a wasteful number, since it uses less digits than its factorization.

28027584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 28027584 is about 5294.1084235214. The cubic root of 28027584 is about 303.7585802586.

The spelling of 28027584 in words is "twenty-eight million, twenty-seven thousand, five hundred eighty-four".