28024512 has 56 divisors (see below), whose sum is σ = 74590656. Its totient is φ = 9285888.

The previous prime is 28024501. The next prime is 28024523. The reversal of 28024512 is 21542082.

It is an interprime number because it is at equal distance from previous prime (28024501) and next prime (28024523).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

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, 43263 + ... + 43905.

It is an arithmetic number, because the mean of its divisors is an integer number (1331976).

Almost surely, 2^28024512 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 28024512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37295328).

28024512 is an abundant number, since it is smaller than the sum of its proper divisors (46566144).

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

28024512 is a wasteful number, since it uses less digits than its factorization.

28024512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 875 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28024512 is about 5293.8182817320. The cubic root of 28024512 is about 303.7474819009.

Adding to 28024512 its reverse (21542082), we get a palindrome (49566594).

The spelling of 28024512 in words is "twenty-eight million, twenty-four thousand, five hundred twelve".