28303002 has 96 divisors (see below), whose sum is σ = 77680512. Its totient is φ = 7247232.

The previous prime is 28302983. The next prime is 28303003. The reversal of 28303002 is 20030382.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (28303003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60373 + ... + 60839.

It is an arithmetic number, because the mean of its divisors is an integer number (809172).

Almost surely, 2^28303002 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28303002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38840256).

28303002 is an abundant number, since it is smaller than the sum of its proper divisors (49377510).

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

28303002 is a wasteful number, since it uses less digits than its factorization.

28303002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 28303002 is about 5320.0565786465. The cubic root of 28303002 is about 304.7503179196.

Adding to 28303002 its reverse (20030382), we get a palindrome (48333384).

It can be divided in two parts, 2830 and 3002, that added together give a cube (5832 = 18³).

The spelling of 28303002 in words is "twenty-eight million, three hundred three thousand, two".