28547792 has 60 divisors (see below), whose sum is σ = 69315876. Its totient is φ = 11289600.

The previous prime is 28547773. The next prime is 28547797. The reversal of 28547792 is 29774582.

It can be written as a sum of positive squares in 2 ways, for example, as 8976016 + 19571776 = 2996^2 + 4424^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28547797) 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 11 ways as a sum of consecutive naturals, for example, 8792 + ... + 11592.

Almost surely, 2^28547792 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 28547792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34657938).

28547792 is an abundant number, since it is smaller than the sum of its proper divisors (40768084).

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

28547792 is a wasteful number, since it uses less digits than its factorization.

28547792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2836 (or 2823 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The square root of 28547792 is about 5343.0133819784. The cubic root of 28547792 is about 305.6263826898.

The spelling of 28547792 in words is "twenty-eight million, five hundred forty-seven thousand, seven hundred ninety-two".