28065916 has 6 divisors (see below), whose sum is σ = 49115360. Its totient is φ = 14032956.

The previous prime is 28065913. The next prime is 28065931. The reversal of 28065916 is 61956082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28065913) 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 as a sum of consecutive naturals, namely, 3508236 + ... + 3508243.

Almost surely, 2^28065916 is an apocalyptic number.

It is an amenable number.

28065916 is a deficient number, since it is larger than the sum of its proper divisors (21049444).

28065916 is a wasteful number, since it uses less digits than its factorization.

28065916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7016483 (or 7016481 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 28065916 is about 5297.7274373074. The cubic root of 28065916 is about 303.8969959203.

The spelling of 28065916 in words is "twenty-eight million, sixty-five thousand, nine hundred sixteen".