28567616 has 168 divisors, whose sum is σ = 77833728. Its totient is φ = 10137600.

The previous prime is 28567603. The next prime is 28567619. The reversal of 28567616 is 61676582.

It is a super-2 number, since 2×28567616² = 1632217367846912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28567619) 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 23 ways as a sum of consecutive naturals, for example, 921521 + ... + 921551.

It is an arithmetic number, because the mean of its divisors is an integer number (463296).

Almost surely, 2^28567616 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 28567616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38916864).

28567616 is an abundant number, since it is smaller than the sum of its proper divisors (49266112).

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

28567616 is a wasteful number, since it uses less digits than its factorization.

28567616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 68 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The square root of 28567616 is about 5344.8681929492. The cubic root of 28567616 is about 305.6971101157.

The spelling of 28567616 in words is "twenty-eight million, five hundred sixty-seven thousand, six hundred sixteen".