28303065 has 48 divisors (see below), whose sum is σ = 59030400. Its totient is φ = 12254976.

The previous prime is 28303057. The next prime is 28303081. The reversal of 28303065 is 56030382.

It is not a de Polignac number, because 28303065 - 2³ = 28303057 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3621 + ... + 8349.

It is an arithmetic number, because the mean of its divisors is an integer number (1229800).

Almost surely, 2^28303065 is an apocalyptic number.

It is an amenable number.

28303065 is an abundant number, since it is smaller than the sum of its proper divisors (30727335).

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

28303065 is a wasteful number, since it uses less digits than its factorization.

28303065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4766 (or 4763 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 28303065 is about 5320.0624996329. The cubic root of 28303065 is about 304.7505440353.

The spelling of 28303065 in words is "twenty-eight million, three hundred three thousand, sixty-five".