28363783 has 8 divisors (see below), whose sum is σ = 32475168. Its totient is φ = 24267264.

The previous prime is 28363763. The next prime is 28363813. The reversal of 28363783 is 38736382.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-28363783 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 (28363723) 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 in 7 ways as a sum of consecutive naturals, for example, 735 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (4059396).

Almost surely, 2^28363783 is an apocalyptic number.

28363783 is a deficient number, since it is larger than the sum of its proper divisors (4111385).

28363783 is an equidigital number, since it uses as much as digits as its factorization.

28363783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7433.

The product of its digits is 145152, while the sum is 40.

The square root of 28363783 is about 5325.7659543018. The cubic root of 28363783 is about 304.9683134689.

The spelling of 28363783 in words is "twenty-eight million, three hundred sixty-three thousand, seven hundred eighty-three".