28616765 has 16 divisors (see below), whose sum is σ = 35786880. Its totient is φ = 21940800.

The previous prime is 28616737. The next prime is 28616771. The reversal of 28616765 is 56761682.

It is not a de Polignac number, because 28616765 - 2⁶ = 28616701 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21242 + ... + 22548.

It is an arithmetic number, because the mean of its divisors is an integer number (2236680).

Almost surely, 2^28616765 is an apocalyptic number.

It is an amenable number.

28616765 is a deficient number, since it is larger than the sum of its proper divisors (7170115).

28616765 is a wasteful number, since it uses less digits than its factorization.

28616765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492.

The product of its digits is 120960, while the sum is 41.

The square root of 28616765 is about 5349.4639918407. The cubic root of 28616765 is about 305.8723213187.

The spelling of 28616765 in words is "twenty-eight million, six hundred sixteen thousand, seven hundred sixty-five".