28052528 has 60 divisors (see below), whose sum is σ = 64095600. Its totient is φ = 11650560.

The previous prime is 28052509. The next prime is 28052537. The reversal of 28052528 is 82525082.

It is a happy number.

It is a super-3 number, since 3×28052528³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28052494 and 28052503.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188198 + ... + 188346.

It is an arithmetic number, because the mean of its divisors is an integer number (1068260).

Almost surely, 2^28052528 is an apocalyptic number.

28052528 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28052528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32047800).

28052528 is an abundant number, since it is smaller than the sum of its proper divisors (36043072).

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

28052528 is a wasteful number, since it uses less digits than its factorization.

28052528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 32.

The square root of 28052528 is about 5296.4637259213. The cubic root of 28052528 is about 303.8486665982.

The spelling of 28052528 in words is "twenty-eight million, fifty-two thousand, five hundred twenty-eight".