28783065 has 16 divisors (see below), whose sum is σ = 46141056. Its totient is φ = 15321600.

The previous prime is 28783063. The next prime is 28783067. The reversal of 28783065 is 56038782.

It is an interprime number because it is at equal distance from previous prime (28783063) and next prime (28783067).

It is not a de Polignac number, because 28783065 - 2¹ = 28783063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28783061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7945 + ... + 10985.

It is an arithmetic number, because the mean of its divisors is an integer number (2883816).

Almost surely, 2^28783065 is an apocalyptic number.

It is an amenable number.

28783065 is a deficient number, since it is larger than the sum of its proper divisors (17357991).

28783065 is a wasteful number, since it uses less digits than its factorization.

28783065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3680.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 28783065 is about 5364.9850885161. The cubic root of 28783065 is about 306.4636803892.

The spelling of 28783065 in words is "twenty-eight million, seven hundred eighty-three thousand, sixty-five".