28520352 has 216 divisors, whose sum is σ = 98594496. Its totient is φ = 7789824.

The previous prime is 28520329. The next prime is 28520353. The reversal of 28520352 is 25302582.

It is not an unprimeable number, because it can be changed into a prime (28520353) 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 35 ways as a sum of consecutive naturals, for example, 606793 + ... + 606839.

It is an arithmetic number, because the mean of its divisors is an integer number (456456).

Almost surely, 2^28520352 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 28520352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49297248).

28520352 is an abundant number, since it is smaller than the sum of its proper divisors (70074144).

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

28520352 is a wasteful number, since it uses less digits than its factorization.

28520352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 28520352 is about 5340.4449252848. Note that the first 3 decimals coincide. The cubic root of 28520352 is about 305.5284290972.

The spelling of 28520352 in words is "twenty-eight million, five hundred twenty thousand, three hundred fifty-two".