28648965 has 16 divisors (see below), whose sum is σ = 46905408. Its totient is φ = 14923776.

The previous prime is 28648957. The next prime is 28648967. The reversal of 28648965 is 56984682.

It is a happy number.

It is not a de Polignac number, because 28648965 - 2³ = 28648957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28648967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21564 + ... + 22853.

It is an arithmetic number, because the mean of its divisors is an integer number (2931588).

Almost surely, 2^28648965 is an apocalyptic number.

It is an amenable number.

28648965 is a deficient number, since it is larger than the sum of its proper divisors (18256443).

28648965 is a wasteful number, since it uses less digits than its factorization.

28648965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44468.

The product of its digits is 829440, while the sum is 48.

The square root of 28648965 is about 5352.4727930182. The cubic root of 28648965 is about 305.9870023101.

The spelling of 28648965 in words is "twenty-eight million, six hundred forty-eight thousand, nine hundred sixty-five".