28560708 has 96 divisors (see below), whose sum is σ = 83664000. Its totient is φ = 8346240.

The previous prime is 28560691. The next prime is 28560709. The reversal of 28560708 is 80706582.

28560708 is a `hidden beast` number, since 28 + 560 + 70 + 8 = 666.

It is a super-2 number, since 2×28560708² = 1631428082922528, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28560709) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 34038 + ... + 34866.

It is an arithmetic number, because the mean of its divisors is an integer number (871500).

Almost surely, 2^28560708 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 28560708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41832000).

28560708 is an abundant number, since it is smaller than the sum of its proper divisors (55103292).

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

28560708 is a wasteful number, since it uses less digits than its factorization.

28560708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 874 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 28560708 is about 5344.2219265296. The cubic root of 28560708 is about 305.6724676922.

The spelling of 28560708 in words is "twenty-eight million, five hundred sixty thousand, seven hundred eight".