28964783 has 4 divisors (see below), whose sum is σ = 29290320. Its totient is φ = 28639248.

The previous prime is 28964779. The next prime is 28964791. The reversal of 28964783 is 38746982.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38746982 = 2 ⋅19373491.

It is a cyclic number.

It is not a de Polignac number, because 28964783 - 2² = 28964779 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28964743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 162635 + ... + 162812.

It is an arithmetic number, because the mean of its divisors is an integer number (7322580).

Almost surely, 2^28964783 is an apocalyptic number.

28964783 is a deficient number, since it is larger than the sum of its proper divisors (325537).

28964783 is an equidigital number, since it uses as much as digits as its factorization.

28964783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325536.

The product of its digits is 580608, while the sum is 47.

The square root of 28964783 is about 5381.8939974697. The cubic root of 28964783 is about 307.1072669261.

The spelling of 28964783 in words is "twenty-eight million, nine hundred sixty-four thousand, seven hundred eighty-three".