28245288 has 32 divisors (see below), whose sum is σ = 73684800. Its totient is φ = 9005568.

The previous prime is 28245263. The next prime is 28245289. The reversal of 28245288 is 88254282.

It is not an unprimeable number, because it can be changed into a prime (28245289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25033 + ... + 26136.

It is an arithmetic number, because the mean of its divisors is an integer number (2302650).

Almost surely, 2^28245288 is an apocalyptic number.

It is an amenable number.

28245288 is an abundant number, since it is smaller than the sum of its proper divisors (45439512).

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

28245288 is a wasteful number, since it uses less digits than its factorization.

28245288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51201 (or 51197 counting only the distinct ones).

The product of its digits is 81920, while the sum is 39.

The square root of 28245288 is about 5314.6296202087. The cubic root of 28245288 is about 304.5430333296.

The spelling of 28245288 in words is "twenty-eight million, two hundred forty-five thousand, two hundred eighty-eight".