28868325 has 48 divisors (see below), whose sum is σ = 49984896. Its totient is φ = 14688000.

The previous prime is 28868321. The next prime is 28868327. The reversal of 28868325 is 52386882.

It is not a de Polignac number, because 28868325 - 2² = 28868321 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280224 + ... + 280326.

It is an arithmetic number, because the mean of its divisors is an integer number (1041352).

Almost surely, 2^28868325 is an apocalyptic number.

28868325 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

28868325 is a deficient number, since it is larger than the sum of its proper divisors (21116571).

28868325 is a wasteful number, since it uses less digits than its factorization.

28868325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 28868325 is about 5372.9251809419. The cubic root of 28868325 is about 306.7659800951.

It can be divided in two parts, 2886 and 8325, that added together give a palindrome (11211).

The spelling of 28868325 in words is "twenty-eight million, eight hundred sixty-eight thousand, three hundred twenty-five".