28545696 has 72 divisors (see below), whose sum is σ = 84206304. Its totient is φ = 9512640.

The previous prime is 28545689. The next prime is 28545719. The reversal of 28545696 is 69654582.

28545696 is a `hidden beast` number, since 2 + 85 + 4 + 569 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 5941 + ... + 9611.

It is an arithmetic number, because the mean of its divisors is an integer number (1169532).

Almost surely, 2^28545696 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 28545696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42103152).

28545696 is an abundant number, since it is smaller than the sum of its proper divisors (55660608).

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

28545696 is an equidigital number, since it uses as much as digits as its factorization.

28545696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3696 (or 3676 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 28545696 is about 5342.8172343811. The cubic root of 28545696 is about 305.6189027351.

It can be divided in two parts, 28545 and 696, that added together give a square (29241 = 171²).

The spelling of 28545696 in words is "twenty-eight million, five hundred forty-five thousand, six hundred ninety-six".