28634528 has 48 divisors (see below), whose sum is σ = 64297800. Its totient is φ = 12435456.

The previous prime is 28634521. The next prime is 28634531. The reversal of 28634528 is 82543682.

It can be written as a sum of positive squares in 4 ways, for example, as 20178064 + 8456464 = 4492^2 + 2908^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28634491 and 28634500.

It is not an unprimeable number, because it can be changed into a prime (28634521) 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 7 ways as a sum of consecutive naturals, for example, 5048 + ... + 9096.

Almost surely, 2^28634528 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 28634528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32148900).

28634528 is an abundant number, since it is smaller than the sum of its proper divisors (35663272).

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

28634528 is a wasteful number, since it uses less digits than its factorization.

28634528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4089 (or 4081 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 28634528 is about 5351.1239940783. The cubic root of 28634528 is about 305.9355952569.

The spelling of 28634528 in words is "twenty-eight million, six hundred thirty-four thousand, five hundred twenty-eight".