28665696 has 24 divisors (see below), whose sum is σ = 75247704. Its totient is φ = 9555200.

The previous prime is 28665691. The next prime is 28665697. The reversal of 28665696 is 69656682.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28665691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149205 + ... + 149396.

It is an arithmetic number, because the mean of its divisors is an integer number (3135321).

Almost surely, 2^28665696 is an apocalyptic number.

It is an amenable number.

28665696 is an abundant number, since it is smaller than the sum of its proper divisors (46582008).

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

28665696 is a wasteful number, since it uses less digits than its factorization.

28665696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298614 (or 298606 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 28665696 is about 5354.0354873684. The cubic root of 28665696 is about 306.0465562040.

The spelling of 28665696 in words is "twenty-eight million, six hundred sixty-five thousand, six hundred ninety-six".