28241028 has 48 divisors (see below), whose sum is σ = 73920000. Its totient is φ = 9323424.

The previous prime is 28241023. The next prime is 28241071. The reversal of 28241028 is 82014282.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28240992 and 28241010.

It is not an unprimeable number, because it can be changed into a prime (28241021) 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 15 ways as a sum of consecutive naturals, for example, 10573 + ... + 12971.

It is an arithmetic number, because the mean of its divisors is an integer number (1540000).

Almost surely, 2^28241028 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 28241028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36960000).

28241028 is an abundant number, since it is smaller than the sum of its proper divisors (45678972).

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

28241028 is a wasteful number, since it uses less digits than its factorization.

28241028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521 (or 2513 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 28241028 is about 5314.2288245803. The cubic root of 28241028 is about 304.5277220023.

The spelling of 28241028 in words is "twenty-eight million, two hundred forty-one thousand, twenty-eight".