28547568 has 120 divisors (see below), whose sum is σ = 92438528. Its totient is φ = 8055936.

The previous prime is 28547567. The next prime is 28547569. The reversal of 28547568 is 86574582.

28547568 is a `hidden beast` number, since 2 + 85 + 4 + 7 + 568 = 666.

It is an interprime number because it is at equal distance from previous prime (28547567) and next prime (28547569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28547567) 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, 127905 + ... + 128127.

Almost surely, 2^28547568 is an apocalyptic number.

28547568 is a gapful number since it is divisible by the number (28) 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 28547568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46219264).

28547568 is an abundant number, since it is smaller than the sum of its proper divisors (63890960).

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

28547568 is a wasteful number, since it uses less digits than its factorization.

28547568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 362 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 28547568 is about 5342.9924199834. The cubic root of 28547568 is about 305.6255833228.

The spelling of 28547568 in words is "twenty-eight million, five hundred forty-seven thousand, five hundred sixty-eight".