28518512 has 40 divisors (see below), whose sum is σ = 62234112. Its totient is φ = 12542400.

The previous prime is 28518509. The next prime is 28518521. The reversal of 28518512 is 21581582.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2843 + ... + 8069.

Almost surely, 2^28518512 is an apocalyptic number.

28518512 is a gapful number since it is divisible by the number (22) 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 28518512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31117056).

28518512 is an abundant number, since it is smaller than the sum of its proper divisors (33715600).

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

28518512 is a wasteful number, since it uses less digits than its factorization.

28518512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5277 (or 5271 counting only the distinct ones).

The product of its digits is 6400, while the sum is 32.

The square root of 28518512 is about 5340.2726522154. The cubic root of 28518512 is about 305.5218585331.

The spelling of 28518512 in words is "twenty-eight million, five hundred eighteen thousand, five hundred twelve".